[72]*72MURPHY, Chief Judge.
According to the Judicial Council of the American Medical Association,
To have another physician operate on one’s patient without the patient’s knowledge and consent is a deceit. The patient is entitled to choose his own physician and should be permitted to acquiesce in or refuse to accept the substitution. The surgeon’s obligation to the patient requires him to perform the surgical operation: (1) within the scope of authority granted by the consent to the operation; (2) in accordance with the terms of the contractual relationship; (3) with complete disclosure of all facts relevant to the need and the performance of the operation; and (4) to utilize his best skill in performing he operation. The patient is entitled to the services of the particular surgeon with whom he or she contracts. The surgeon, in accepting the patient is obligated to utilize his personal talents in the performance of the operation to the extent required by the agreement creating the physician-patient relationship. He cannot properly delegate to another the duties which he is required to perform personally. Under normal and customary arrangement with private patients, and with reference to the usual form of consent to operation, the surgeon is obligated to perform the operation, and may use the services of assisting residents or other assisting surgeons to the extent that the operation reasonably requires the employment of such assistance. If a resident or other physician is to perform the operation under the guidance of the surgeon, it is necessary to make a full disclosure of this fact to the patient, and this should be evidenced by an appropriate statement contained in the consent.
If the surgeon employed merely assists the resident or other physician in performing the operation, it is the resident or other physician who becomes the operating surgeon. If the patient is not informed as to the identity of the operating surgeon, the situation is “ghost surgery.”
[73]*73Judicial Council of the American Medical Ass’n, Op. 8.12 (1982). This appeal from the Circuit Court for Baltimore City presents us with the question of how the trier of fact should go about resolving a “ghost surgery” claim arising out of an operation that was unsuccessful because of an error that did not constitute a deviation from the applicable standard of care.1 It comes to us from a jury determination that Dr. Lenox Dingle and Mercy Medical Center (“Mercy”), appellees, were not responsible for injuries sustained by Debra Belin, appellant, during appellant’s July 21, 1998 surgery. Prior to jury deliberations, the circuit court granted appellees’ Motion for Judgment on appellant’s breach of contract claim.2
Appellant has framed the following questions for our review:
I. Did the Trial Court err in dismissing the Breach of Contract Count (Count Four) on the grounds that it was subsumed under the Negligence Count?
II. Did the Trial Court err in prohibiting testimony as to the character of the Appellant for truthfulness?
III. Did the Trial Court err in refusing to instruct the jury with the Appellant’s theory of the case instruction to wit:
(a) a plaintiff need not prove the specific mechanism or act of negligence in the operating room; and
(b) an expert may conclude from the results of the operative procedure that negligence occurred causing the injury.
For the reasons that follow, we answer “yes” to question I, and “no” to questions II and III. Appellant is entitled to a new trial on the breach of contract claim asserted against Dr. Dingle.
[74]*74Background
Appellant, a Mercy employee, was advised by her primary care physician that she may need gallbladder removal surgery. On June 29, 1993, appellant was examined by Dr. Dingle, who recommended surgery. Although there is a dispute over who said what during that meeting, appellant decided to have the operation. On July 2, 1993, appellant signed a Mercy “Consent to Diagnostic, Therapeutic and Surgical Procedure” form which provided as follows:
I hereby authorize Dr. Dingle and/or such assistants as may be selected or supervised by him to treat the following condition(s):_by performing the following diagnostic, therapeutic, or surgical procedure(s): Laparascopic Cholecystectomy.
Appellant underwent gallbladder removal surgery on July 21, 1993. The jurors heard testimony that Doctor Tracy Magnuson, a resident at Mercy, performed the surgery under the supervision of Dr. Dingle.3 Unfortunately for appellant, [75]*75Doctor Magnuson erroneously cut and clamped the common bile duct. That error caused leakage of bile into appellant’s abdomen, as a result of which appellant (1) suffered pain and bloating, (2) needed reconstructive surgery, as well as numerous post operation (bile collection) tube replacements, and (3) was required to undergo two incisional hernia operations.
I.
Appellant’s Contract Action
Appellant testified that she was familiar with Dr. Dingle because he was a “regular surgeon” at Mercy. As appellant put it, Mercy was used as a teaching facility for residents, and she did not want her operation to be used for training pur[76]*76poses. The following transpired during appellant’s direct examination:
[APPELLANT’S COUNSEL]: All right when you met with Dr. Dingle on June 29th, did you have a conversation with him about who would be performing the surgery?
[APPELLANT]: Definitely.
[APPELLANT’S COUNSEL]: All right, will you tell the members of the jury, please, what that conversation was?
[APPELLANT]: After Dr. Dingle examined me, I told him that I wanted him to be the one that was going to cut me and identify the gallbladder and take it out. And he said well, you know, [appellant], I can’t do the surgery by myself. I said I’m aware of that. I said, but if you have a resident in there, I just want that person to maybe suture me up. But I want you to be the one to do my surgery. And he agreed.
[APPELLANT’S COUNSEL]: All right, when you say that you wanted him to cut you, what did you mean by that?
[APPELLANT]: I wanted him to make the initial cut. [APPELLANT’S COUNSEL]: And what else?
[APPELLANT]: And I wanted him to identify my gallbladder and to cut the gallbladder from whatever it’s connected to.
[APPELLANT’S COUNSEL]: Okay, All [sic] right. Were you aware that there was a camera used in a lap choli procedure?
[APPELLANT]: Yes.
[APPELLANT’S COUNSEL]: Were you aware that someone needed to hold the camera?
[APPELLANT]: Yes.
[APPELLANT’S COUNSEL]: Were you aware that someone needed to hold the retractors holding up the gallbladder?
[APPELLANT]: Yes.
[77]*77[APPELLANT’S COUNSEL]: All right. Based on your discussion with Dr.
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[72]*72MURPHY, Chief Judge.
According to the Judicial Council of the American Medical Association,
To have another physician operate on one’s patient without the patient’s knowledge and consent is a deceit. The patient is entitled to choose his own physician and should be permitted to acquiesce in or refuse to accept the substitution. The surgeon’s obligation to the patient requires him to perform the surgical operation: (1) within the scope of authority granted by the consent to the operation; (2) in accordance with the terms of the contractual relationship; (3) with complete disclosure of all facts relevant to the need and the performance of the operation; and (4) to utilize his best skill in performing he operation. The patient is entitled to the services of the particular surgeon with whom he or she contracts. The surgeon, in accepting the patient is obligated to utilize his personal talents in the performance of the operation to the extent required by the agreement creating the physician-patient relationship. He cannot properly delegate to another the duties which he is required to perform personally. Under normal and customary arrangement with private patients, and with reference to the usual form of consent to operation, the surgeon is obligated to perform the operation, and may use the services of assisting residents or other assisting surgeons to the extent that the operation reasonably requires the employment of such assistance. If a resident or other physician is to perform the operation under the guidance of the surgeon, it is necessary to make a full disclosure of this fact to the patient, and this should be evidenced by an appropriate statement contained in the consent.
If the surgeon employed merely assists the resident or other physician in performing the operation, it is the resident or other physician who becomes the operating surgeon. If the patient is not informed as to the identity of the operating surgeon, the situation is “ghost surgery.”
[73]*73Judicial Council of the American Medical Ass’n, Op. 8.12 (1982). This appeal from the Circuit Court for Baltimore City presents us with the question of how the trier of fact should go about resolving a “ghost surgery” claim arising out of an operation that was unsuccessful because of an error that did not constitute a deviation from the applicable standard of care.1 It comes to us from a jury determination that Dr. Lenox Dingle and Mercy Medical Center (“Mercy”), appellees, were not responsible for injuries sustained by Debra Belin, appellant, during appellant’s July 21, 1998 surgery. Prior to jury deliberations, the circuit court granted appellees’ Motion for Judgment on appellant’s breach of contract claim.2
Appellant has framed the following questions for our review:
I. Did the Trial Court err in dismissing the Breach of Contract Count (Count Four) on the grounds that it was subsumed under the Negligence Count?
II. Did the Trial Court err in prohibiting testimony as to the character of the Appellant for truthfulness?
III. Did the Trial Court err in refusing to instruct the jury with the Appellant’s theory of the case instruction to wit:
(a) a plaintiff need not prove the specific mechanism or act of negligence in the operating room; and
(b) an expert may conclude from the results of the operative procedure that negligence occurred causing the injury.
For the reasons that follow, we answer “yes” to question I, and “no” to questions II and III. Appellant is entitled to a new trial on the breach of contract claim asserted against Dr. Dingle.
[74]*74Background
Appellant, a Mercy employee, was advised by her primary care physician that she may need gallbladder removal surgery. On June 29, 1993, appellant was examined by Dr. Dingle, who recommended surgery. Although there is a dispute over who said what during that meeting, appellant decided to have the operation. On July 2, 1993, appellant signed a Mercy “Consent to Diagnostic, Therapeutic and Surgical Procedure” form which provided as follows:
I hereby authorize Dr. Dingle and/or such assistants as may be selected or supervised by him to treat the following condition(s):_by performing the following diagnostic, therapeutic, or surgical procedure(s): Laparascopic Cholecystectomy.
Appellant underwent gallbladder removal surgery on July 21, 1993. The jurors heard testimony that Doctor Tracy Magnuson, a resident at Mercy, performed the surgery under the supervision of Dr. Dingle.3 Unfortunately for appellant, [75]*75Doctor Magnuson erroneously cut and clamped the common bile duct. That error caused leakage of bile into appellant’s abdomen, as a result of which appellant (1) suffered pain and bloating, (2) needed reconstructive surgery, as well as numerous post operation (bile collection) tube replacements, and (3) was required to undergo two incisional hernia operations.
I.
Appellant’s Contract Action
Appellant testified that she was familiar with Dr. Dingle because he was a “regular surgeon” at Mercy. As appellant put it, Mercy was used as a teaching facility for residents, and she did not want her operation to be used for training pur[76]*76poses. The following transpired during appellant’s direct examination:
[APPELLANT’S COUNSEL]: All right when you met with Dr. Dingle on June 29th, did you have a conversation with him about who would be performing the surgery?
[APPELLANT]: Definitely.
[APPELLANT’S COUNSEL]: All right, will you tell the members of the jury, please, what that conversation was?
[APPELLANT]: After Dr. Dingle examined me, I told him that I wanted him to be the one that was going to cut me and identify the gallbladder and take it out. And he said well, you know, [appellant], I can’t do the surgery by myself. I said I’m aware of that. I said, but if you have a resident in there, I just want that person to maybe suture me up. But I want you to be the one to do my surgery. And he agreed.
[APPELLANT’S COUNSEL]: All right, when you say that you wanted him to cut you, what did you mean by that?
[APPELLANT]: I wanted him to make the initial cut. [APPELLANT’S COUNSEL]: And what else?
[APPELLANT]: And I wanted him to identify my gallbladder and to cut the gallbladder from whatever it’s connected to.
[APPELLANT’S COUNSEL]: Okay, All [sic] right. Were you aware that there was a camera used in a lap choli procedure?
[APPELLANT]: Yes.
[APPELLANT’S COUNSEL]: Were you aware that someone needed to hold the camera?
[APPELLANT]: Yes.
[APPELLANT’S COUNSEL]: Were you aware that someone needed to hold the retractors holding up the gallbladder?
[APPELLANT]: Yes.
[77]*77[APPELLANT’S COUNSEL]: All right. Based on your discussion with Dr. Dingle, whom did you anticipate would do those things?
[APPELLANT]: I had no idea, and I wasn’t all that concerned about who would be holding the camera. My main concern was I wanted to know who was going to be cutting me open and taking my gallbladder out. [APPELLANT’S COUNSEL]: Were you aware that sometimes at Mercy the actual cutting and the clipping of the ducts and the gallbladder removal was done by a resident under the supervision of the surgeon?
[APPELLANT]: I am aware that sometimes the residents do it, if the doctors let them do it.
[APPELLANT’S COUNSEL]: Did you want that to happen in your case?
[APPELLANT]: Definitely not.
[APPELLANT’S COUNSEL]: So you chose the surgeon, Dr. Dingle. Did you choose anyone else in the operating room?
[APPELLANT]: No.
[APPELLANT’S COUNSEL]: As far as the anesthesiologist?
[APPELLANT]: Oh, I’m sorry, yes. I chose everybody. I chose the surgeon, Dr. Dingle. I chose the nurse, Anne Turner. I chose the anesthesiologist, Dr. Halisi. And by the way, he’s in charge of that department. And I chose the surgical tech, which was Ceola.
Dr. Dingle denied that he had ever entered into any such agreement. The following transpired during his direct examination:
[COUNSEL]:.... Do you recall having the conversation that we’ve heard [appellant] describe in her testimony about what role a resident was to play in her operation?
[DR. DINGLE]: We didn’t have that conversation.
[COUNSEL]: And how did you know you did not have that conversation?
[78]*78[DR. DINGLE]: Well, I think, you know, we’re sitting hear four and a half years later, I think at the time I took the deposition, it was three years after the fact and people say, well how do you know what was said at that point in time and the only way I can answer it is simply like this, I think if you had asked anybody in this room what they were doing on the evening of November 2nd, 1995, most would say you know, I really can’t recall what I was doing that evening.
But if you ask them if you were having dinner with Nelson Mandella or whether or not they were robbing a bank, I think they could say no, I wasn’t doing those kind [sic] of things and the reason why they can say it is because they’ve never done them before. And so I cannot specifically recall specific elements of that conversation but I know I’ve never had anybody tell me that you cannot do this or you cannot do this and I want you to specifically do that and this in an operation. That’s something that I think I would remember and it’s something that I probably would object to.
[COUNSEL]: I want you to assume for the purposes of my question at the moment that [appellant] said to you what she’s testified she said to you, if in fact she had said that, what about the course of her operation would have changed, if anything?
[DR. DINGLE]: Let’s assume, assuming that she said that and assuming that I was going to comply with that, for the benefit of the doubt, let’s just say okay, [appellant] I’m going to do as you ask me, I would have had to take her to a different hospital. To not be able to have the residents work with me would have meant that I would have had to go to another hospital and perhaps ask some surgeons from the community if they would want to be available to operation [sic] and assist. But I would have done pretty much what the other doctors here have said, that I don’t want to go into the operating room with these conditions placed on me. That I need to be able to perform the surgery in the way in which I feel is best done. I may have asked her to get another surgeon.
[79]*79[COUNSEL]: And did any of those things occur in this case?
[DR. DINGLE]: No.
The jurors did not resolve this testimonial conflict because at the close of all of the evidence, the circuit court granted appellee’s motion for judgment on the breach of contract count against Dr. Dingle on the basis that it was subsumed in the negligence count.4 We are persuaded that the circuit court should not have done so.
In Perna v. Pirozzi, 92 N.J. 446, 457 A.2d 431 (1983), the Supreme Court of New Jersey considered claims asserted by a patient-appellant who testified that he never authorized any surgeon other than the physician-appellee to perform the operation. In this case, the patient-appellant had executed a consent form that named the physician-appellee “as the operating surgeon and authorized him, with the aid of unnamed ‘assistants,’ to perform the surgery.” 92 N.J. at 452, 457 A.2d at 434. Appellee was not present at the operation. Appellant learned the identities of the operating surgeons only after being readmitted for post-surgical complications. The supreme court held that, under these circumstances,
As to [the physician-appellee], the action follows from the alleged breach of his agreement to operate and the fiduciary duty he owed his patient. With respect to that allegation, [80]*80the Judicial Council of the American Medical Association has decried the substitution of one surgeon for another without the consent of the patient, describing the practice as a “deceit.” A patient has a right to choose the surgeon who will operate on him and to refuse to accept a substitute. Correlative to that right is the duty of the doctor to provide his or her personal services in accordance with the agreement with the patient.
New decisions bespeak greater trust and confidence than the decision of the patient to proceed with surgery. Implicit in that decision is a willingness of the patient to put his life or her life in the hands of a known and trusted medical doctor.
The point is that the patient has the right to know who will operate and the consent form should reflect the patient’s decision. Where a competent patient consents to surgery by a specific surgeon of his choice, the patient has every right to expect that surgeon, not another, to operate.
The failure of a surgeon to perform a medical procedure after soliciting a patient’s consent, like the failure to operate on the appropriate part of the patient’s body, is a deviation from standard medical care. It is malpractice whether the right surgeon operates on the wrong part or the wrong surgeon operates on the right part of the patient. In each instance, the surgeon has breached his duty to care for he patient. Where damages are the proximate result of a deviation from standard medical care, a patient has a cause of action for malpractice. Although an alternative cause of action could be framed as a breach of contract between the surgeon and the patient, generally the more appropriate characterization of the cause will be for breach of the duty of care owed by the doctor to the patient. The absence of damages may render any action deficient, but the doctor who, without the consent of the patient, permits another [81]*81surgeon to operate violates not only a fundamental tenet of the medical profession, but also a legal obligation.
92 N.J. at 463-465, 457 A.2d at 440-441. If it is true that (1) Dr. Dingle had agreed to appellant’s version of their contract and (2) did not do what he had agreed to do, Dr. Dingle’s contractual obligation was separate from and existed independent of his duty to make sure that no deviation from the applicable standard of care occurred during the operation.5
It is clear that (1) the patient-plaintiff has the burden of persuasion on the issue of whether the physician-defendant breached the agreement to perform the surgery personally, and (2) the physician-defendant should not be held liable for injuries that the patient-plaintiff would have suffered even if there had been no breach of the agreement. We must therefore decide which party has the burden of persuasion on the issue of damages. If, on remand, a jury is persuaded that Dr. Dingle did breach the agreement, is appellant also required to persuade the jurors that she would not have suffered the unintended consequences of the operation if it had been performed by Dr. Dingle, or is Dr. Dingle required to persuade the jurors that the result would have been the same even if he had done everything that he had agreed to do?
We are persuaded that in a “ghost surgery” claim, once the jurors find that (1) the physician-defendant did [82]*82breach the agreement to perform the surgery, and (2) the surgery was unsuccessful,6
I. the patient has the burden of persuasion on the issue of what damages resulted from the unintended consequences of the operation, i.e. those injuries that would not have followed from a successful operation; and
II. the physician has the burden of persuasion on the issue of what injuries would have followed the unsuccessful operation even if the physician had not breached the agreement.
Thus, on remand, the jurors will be instructed that if the “agreement to perform” issue is resolved in appellant’s favor, appellant is entitled to damages for (1) all injuries that the jurors find more likely so than not so resulted from the cutting of her common bile duct, (2) except for those particular injuries that the jurors find more likely so than not so would have been sustained even if Dr. Dingle had performed as agreed. Such a damage award is consistent with the well settled rule that the party who has breached the contract bears the burden of persuasion on the mitigation of damages issue. Volos, Ltd. v. Sotera, 264 Md. 155, 176, 286 A.2d 101 (1972); Sergeant Co. v. Pickett, 285 Md. 186, 203, 401 A.2d 651 (1979); Mattvidi v. NationsBank, 100 Md.App. 71, 90, 639 A.2d 228 (1994).
Appellant’s Negligence Actions
We are persuaded that the circuit court did not commit any error with respect to appellant’s negligence claims against either appellee. The evidence was sufficient to support the jurors’ conclusion that neither appellee was negligent.
[83]*83II.
There is no merit in appellant’s contention that the circuit court erred in disallowing testimony as to appellant’s truthfulness. The following transpired during the direct examination of appellant’s aunt:
[APPELLANT’S COUNSEL]: I will just ask you this. You may seem to think that this is kind of a funny question. Does your niece have a reputation in the community about being a truthful person?
[COUNSEL FOR MERCY]: Objection.
[COUNSEL FOR DINGLE]: Objection.
[THE COURT]: Sustained.
[APPELLANT’S COUNSEL]: You Honor, may I approach?
[THE COURT]: Sure.
(Counsel approached the bench and the following ensued:) [APPELLANT’S COUNSEL]: Dr. Dingle is going to say that he has no recollection of this conversation. In fact, because of the unusual nature of the conversation about not wanting the resident to do the cutting and clipping, the doctor mentioned he would have remembered it. So I believe that there is clearly going to be in this case a question if credibility, and that is the reason that I have asked that question. I believe it is appropriate to bring in character testimony of [sic] credibility as an issue, and that is why I have asked that question. So although my client’s credibility has not yet been attacked, I anticipate that being the case with the testimony of Dr. Dingle pursuant to his deposition.
We agree with the circuit court that such “good character” evidence was inadmissible under Md. Rule 5-608(a)(2). It is well settled that in the trial of a civil action,
[contradictory testimony of different witnesses may proceed from want of equal knowledge or observation not involving the moral character of either; but such conflict [84]*84does not authorize the admission of evidence as to the general character of the witness for truth.
Vernon v. Tucker, 30 Md. 456, 462 (1869). Appellant was not entitled to present evidence of her good character for veracity in “anticipatory rehabilitation” of Dr. Dingle’s contradictory testimony.
III.
Appellant argues that the circuit court erred in refusing to instruct the jury that the appellant was not required to prove the specific act of negligence in the operating room. Appellees argue that such an instruction is inapplicable to this case because appellant’s expert opined as to the precise act of negligence that allegedly caused appellant’s injury. When a specific act of negligence has been asserted, the jury is required
to decide whether it accepted as credible the expert’s testimony concerning why negligence must have been the cause of [the] accident.
Dover Elevator Co. v. Swann, 334 Md. 231, 249, 638 A.2d 762 (1994). We are persuaded that, because appellant’s expert identified “the actual mechanism of the [appellant’s] injury,” the circuit court correctly rejected appellant’s requested instruction.
Appellant next argues that the trial judge committed error in refusing to instruct the jury that an expert witness may conclude from the result of the procedure that appellees were negligent.
If any form of a “mere happening” instruction is to be given in a medical malpractice case requiring expert testimony, the jury should be informed that, although an unsuccessful result does not create a presumption of negligence, it still may be considered as some evidence of negligence and that an expert witness may consider it in formulating his or her opinion that there was negligence.
Kennelly v. Burgess, 337 Md. 562, 575, 654 A.2d 1335 (1995). In this case, however, the jurors did not receive a “mere [85]*85happening” instruction. Moreover, both appellant’s expert and Dr. Dingle’s expert agreed that an erroneous clamping of the common bile duct can occur in the absence of negligence.7 Under these circumstances the circuit court did not err in refusing to instruct the jury that an expert could infer the existence of negligence from the outcome of the surgery.
JUDGMENTS ON THE MALPRACTICE CLAIMS AFFIRMED; JUDGMENT ON THE CONTRACT CLAIM AGAINST APPELLEE DINGLE VACATED; CONTRACT CLAIM REMANDED FOR FURTHER PROCEEDINGS NOT INCONSISTENT WITH THIS OPINION. APPELLANT TO PAY 75% OF THE COSTS; 25% OF THE COSTS TO BE PAID BY APPELLEE DINGLE.