QUINN, Chief Justice.
Pursuant to Rule 21.1 of the Colorado Appellate Rules, the United States Court of Appeals for the Tenth Circuit has certified the following three questions of Colorado law which may be determinative of an appeal presently pending in that court:
1. Under the 1977 amendments to the Colorado medical negligence statute of limitations, Section 13-80-105, [6] C.R.S. [1985 Supp.], is this action barred where brought by a ... mentally incompetent person [who was fifteen years old in 1977]1 and on his behalf by co-guardians, alleging negligence by medical practitioners and a hospital in July and August 1962, which action was not commenced [1080]*1080within one year after the effective date of the said 1977 amendments to the medical negligence statute of limitations?
2. Was the running of the medical negligence statute of limitations, Section 13-80-105, [6] C.R.S. [1985 Supp.], tolled in this case, thereby rendering plaintiffs’ action timely on the theory that mental incompetence caused by defendants’ negligent conduct tolled the statute of limitations for an action based on that conduct?
3. Did the third clause of the [first] sentence of subsection [2]2 of the medical negligence statute of limitations, Section 13-80-105, [6] C.R.S. [1985 Supp.], which provides that “if there is a discovered act or omission which could give rise to an action, the limitations period shall not run unless a guardian ad litem is appointed to represent the minor child,” toll the running of the medical negligence statute of limitations in this case until the appointment of Steven Clyde Tenney's parents as his co-guardians, thereby rendering plaintiffs’ action timely?
We agreed to respond to the certified questions and now answer question one in the negative, and question two in the affirmative. Our answers to these questions render it unnecessary to respond to question three.
I.
The plaintiffs-appellants, Clyde Arthur Tenney and Ardith Mae Tenney, are the parents of Steven Clyde Tenney, who was bom on August 10, 1962, at Mercy Medical Center in Denver, Colorado. Steven’s parents were appointed his legal co-guardians on September 8, 1980. On August 10, 1982, Steven’s parents, as co-guardians on behalf of Steven, filed a diversity action in the United States District Court for the District of Colorado. Alleging that the plaintiffs were citizens and residents of the state of Washington and that the defendants were citizens and residents of the state of Colorado, the complaint sought money damages against the defendants-ap-pellees, Carl Flaxer, Eugene Schulman, Frank S. Potestio, and Mercy Medical Center, for injuries caused to Steven as the result of the defendants’ negligence in connection with the treatment administered to Steven’s mother during the late stages of her pregnancy in July and August 1962 and during Steven’s birth on August 10, 1962. The complaint alleged that as a direct and proximate result of the negligence of the individual defendants Steven was born with severe and permanent brain damage and has suffered total and permanent disability since birth.
The district court granted the defendants’ motions for summary judgment, ruling that the action was barred by the Colorado medical malpractice statute of limitations, § 13-80-105, 6 C.R.S. (1985 Supp.). The plaintiff appealed to the United States Court of Appeals for the Tenth Circuit, which thereafter certified the three questions to this court.
II.
A.
Section 13-80-105, 6 C.R.S. (1985 Supp.), the version of the medical malpractice statute of limitations under which we decide the questions before us, was enacted in the form herein discussed in 1977.3 Under sec[1081]*1081tion 13-80-105(1), a claim for medical malpractice in Colorado must be filed within two years “after the person bringing the action discovered, or in the exercise of reasonable diligence and concern should have discovered, the injury.” The statute also contains a repose provision which, subject to specified exceptions, states that “[i]n no event may such action be instituted more than three years after the act or omission which gave rise” to the injury. § 13-80-105(1). The three-year repose provision does not apply in cases of knowing concealment of the act or omission, or of leaving an unauthorized foreign object in the body, or in the case of a minor who was under six years old at the time of injury. § 13-80-105(1)(a), (b). In the case of an injury to a child under six, an action may be brought on his behalf within two years of his sixth birthday. § 13-80-105(1)(b).
In addition to the above exceptions to the repose provision, section 13-80-105(2) provides for the tolling of the periods of limitation and repose in the case of a minor under eighteen who has no natural or legal guardian; such a claim must be filed within two years after a legal guardian has been appointed, or within two years after the minor reaches eighteen, whichever first occurs. Section 13-80-105(3) states that for purposes of the limitation and repose periods of the statute a person under disability includes a “mental incompetent.”4
[1082]*1082Before 1977 a minor entitled to bring an action for medical malpractice had until two years after he reached the age of majority to file his claim. See § 13-80-116, 6 C.R.S. (1973). Since Steven was only fifteen years of age in 1977, his claim was still viable under the pre-1977 statutory scheme. In 1977 the General Assembly amended the medical malpractice statute by including, among other revisions, a special section which stated that all causes of action existing on the effective date of the statute, July 1, 1977, would not be barred until one year after that date, or until the expiration of the limitations period, whichever was longer. See ch. 198, sec. 5, 1977 Colo.Sess.Laws 816, 818.
B.
The United States District Court interpreted section 13-80-105(l)(b), 6 C.R.S. (1985 Supp.), which states that any claim on behalf of a minor under six years on the date of the act or omission must be filed within two years after the minor reaches six years of age, as applicable to any claim on behalf of a minor who had either a natural or legal guardian irrespective of the existence of any other disability, such as mental incompetency. It was the district court’s view that:
[Wjhether a minor under six years of age has a disability or doesn’t have a disability ... simply does not make any difference because the statute very clearly says if the action is brought by or on behalf of a minor who is under six years of age on the date of occurrence of the act or omission for which the action is brought, then such action may be instituted within two years after said minor reaches six years of age_ The natural or legal guardian has the obligation to bring the action within two years of the minor reaching six years of age, or because of the change in the statutory language, one year after July 1, 1977.
Because in the present case the action was not filed by Steven’s parents before Steven’s eighth birthday or within one year of July 1, 1977, the district court concluded that his claim was barred.
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QUINN, Chief Justice.
Pursuant to Rule 21.1 of the Colorado Appellate Rules, the United States Court of Appeals for the Tenth Circuit has certified the following three questions of Colorado law which may be determinative of an appeal presently pending in that court:
1. Under the 1977 amendments to the Colorado medical negligence statute of limitations, Section 13-80-105, [6] C.R.S. [1985 Supp.], is this action barred where brought by a ... mentally incompetent person [who was fifteen years old in 1977]1 and on his behalf by co-guardians, alleging negligence by medical practitioners and a hospital in July and August 1962, which action was not commenced [1080]*1080within one year after the effective date of the said 1977 amendments to the medical negligence statute of limitations?
2. Was the running of the medical negligence statute of limitations, Section 13-80-105, [6] C.R.S. [1985 Supp.], tolled in this case, thereby rendering plaintiffs’ action timely on the theory that mental incompetence caused by defendants’ negligent conduct tolled the statute of limitations for an action based on that conduct?
3. Did the third clause of the [first] sentence of subsection [2]2 of the medical negligence statute of limitations, Section 13-80-105, [6] C.R.S. [1985 Supp.], which provides that “if there is a discovered act or omission which could give rise to an action, the limitations period shall not run unless a guardian ad litem is appointed to represent the minor child,” toll the running of the medical negligence statute of limitations in this case until the appointment of Steven Clyde Tenney's parents as his co-guardians, thereby rendering plaintiffs’ action timely?
We agreed to respond to the certified questions and now answer question one in the negative, and question two in the affirmative. Our answers to these questions render it unnecessary to respond to question three.
I.
The plaintiffs-appellants, Clyde Arthur Tenney and Ardith Mae Tenney, are the parents of Steven Clyde Tenney, who was bom on August 10, 1962, at Mercy Medical Center in Denver, Colorado. Steven’s parents were appointed his legal co-guardians on September 8, 1980. On August 10, 1982, Steven’s parents, as co-guardians on behalf of Steven, filed a diversity action in the United States District Court for the District of Colorado. Alleging that the plaintiffs were citizens and residents of the state of Washington and that the defendants were citizens and residents of the state of Colorado, the complaint sought money damages against the defendants-ap-pellees, Carl Flaxer, Eugene Schulman, Frank S. Potestio, and Mercy Medical Center, for injuries caused to Steven as the result of the defendants’ negligence in connection with the treatment administered to Steven’s mother during the late stages of her pregnancy in July and August 1962 and during Steven’s birth on August 10, 1962. The complaint alleged that as a direct and proximate result of the negligence of the individual defendants Steven was born with severe and permanent brain damage and has suffered total and permanent disability since birth.
The district court granted the defendants’ motions for summary judgment, ruling that the action was barred by the Colorado medical malpractice statute of limitations, § 13-80-105, 6 C.R.S. (1985 Supp.). The plaintiff appealed to the United States Court of Appeals for the Tenth Circuit, which thereafter certified the three questions to this court.
II.
A.
Section 13-80-105, 6 C.R.S. (1985 Supp.), the version of the medical malpractice statute of limitations under which we decide the questions before us, was enacted in the form herein discussed in 1977.3 Under sec[1081]*1081tion 13-80-105(1), a claim for medical malpractice in Colorado must be filed within two years “after the person bringing the action discovered, or in the exercise of reasonable diligence and concern should have discovered, the injury.” The statute also contains a repose provision which, subject to specified exceptions, states that “[i]n no event may such action be instituted more than three years after the act or omission which gave rise” to the injury. § 13-80-105(1). The three-year repose provision does not apply in cases of knowing concealment of the act or omission, or of leaving an unauthorized foreign object in the body, or in the case of a minor who was under six years old at the time of injury. § 13-80-105(1)(a), (b). In the case of an injury to a child under six, an action may be brought on his behalf within two years of his sixth birthday. § 13-80-105(1)(b).
In addition to the above exceptions to the repose provision, section 13-80-105(2) provides for the tolling of the periods of limitation and repose in the case of a minor under eighteen who has no natural or legal guardian; such a claim must be filed within two years after a legal guardian has been appointed, or within two years after the minor reaches eighteen, whichever first occurs. Section 13-80-105(3) states that for purposes of the limitation and repose periods of the statute a person under disability includes a “mental incompetent.”4
[1082]*1082Before 1977 a minor entitled to bring an action for medical malpractice had until two years after he reached the age of majority to file his claim. See § 13-80-116, 6 C.R.S. (1973). Since Steven was only fifteen years of age in 1977, his claim was still viable under the pre-1977 statutory scheme. In 1977 the General Assembly amended the medical malpractice statute by including, among other revisions, a special section which stated that all causes of action existing on the effective date of the statute, July 1, 1977, would not be barred until one year after that date, or until the expiration of the limitations period, whichever was longer. See ch. 198, sec. 5, 1977 Colo.Sess.Laws 816, 818.
B.
The United States District Court interpreted section 13-80-105(l)(b), 6 C.R.S. (1985 Supp.), which states that any claim on behalf of a minor under six years on the date of the act or omission must be filed within two years after the minor reaches six years of age, as applicable to any claim on behalf of a minor who had either a natural or legal guardian irrespective of the existence of any other disability, such as mental incompetency. It was the district court’s view that:
[Wjhether a minor under six years of age has a disability or doesn’t have a disability ... simply does not make any difference because the statute very clearly says if the action is brought by or on behalf of a minor who is under six years of age on the date of occurrence of the act or omission for which the action is brought, then such action may be instituted within two years after said minor reaches six years of age_ The natural or legal guardian has the obligation to bring the action within two years of the minor reaching six years of age, or because of the change in the statutory language, one year after July 1, 1977.
Because in the present case the action was not filed by Steven’s parents before Steven’s eighth birthday or within one year of July 1, 1977, the district court concluded that his claim was barred.
The district court’s resolution of the matter, however, does not take into account that Steven, in addition to having been a minor one year after July 1, 1977, was at all times since his birth a mental incompetent. If mental incompetency, not minority, is viewed as Steven’s disability for the purposes of the statute of limitations, then Steven’s claim was not time-barred. While section 13-80-105(3), 6 C.R.S. (1985 Supp.), includes a mental incompetent within the definition of a person under disability, it does not specifically address the effect of such incompetency on the limitation and repose periods applicable to medical malpractice claims. Section 13-81-103(l)(a), 6 C.R.S. (1973), does address this question,5 [1083]*1083and, as we recently held in Southard v. Miles, 714 P.2d 891 (Colo.1986), this section establishes an indefinite toll for a “person under a disability” by reason of mental incompetency.6
In Southard, suit had been brought against three physicians and a hospital by the parents of a twenty-five-year-old man who had sustained irreversible brain damage, allegedly as a result of the defendants’ negligence. Since the action was filed over three years after the date of the injury, the defendants argued that the claim was barred under section 13-80-105. We disagreed, concluding that if plaintiff Southard were found on remand to be under a disability sufficient to invoke the general tolling provisions of section 13-81-103(1)(a), his claim would not be barred, since that provision also applied to the limitations period for medical malpractice claims:
[Section 13-81-103] is intended to apply to any statute of limitations in this state, § 13-81-101(1), 6 C.R.S. (1973), unless there exists a special statute pertinent to the claim that conflicts with the general provisions of section 13-81-103. No such conflict exists here, as section 13-80-105 is totally silent on the effect of mental incompetency on the two-year period of limitation and the three-year period of repose applicable to medical malpractice claims.
714 P.2d at 897. In the case of a claim of a mental incompetent for injury sustained as a result of medical malpractice, therefore, [1084]*1084the tolling period created by section 13-81-103(l)(a) continues until the mental incompetency is removed or a “legal representative” is appointed, in which event the action must be filed within two years of such appointment. Section 13-81-101(2), 6 C.R.S. (1973), defines a “legal representative” to include a “guardian ... appointed by a court having jurisdiction of any person under disability,” but does not include a natural parent not so appointed.
C.
The defendants-appellees would distinguish Southard on the basis that Douglas Southard became mentally incompetent as an adult, while Steven Tenney had been so since birth. The parents of one whose mental incompetency arises from birth injuries, it is argued, would surely have discovered the injury by the time the child reached the age of six, and would have brought an action on his behalf out of a sense of responsibility for their child. Thus, the argument concludes, unlike a mentally incompetent adult who may have no one to look out for his rights until a legal representative is appointed, a mentally incompetent child who has natural parents does not need the additional protection provided by applying the general tolling provisions of section 13-81-103(l)(a) to the medical malpractice statute of limitations.
Such argument flies in the face of the plain language of the applicable statutes. Nowhere in these statutes is there any indication that the disability of mental incompetency is available only to adults. Section 13-81-101(3) includes a “mental incompetent” within the definition of “person under disability” with no qualifying or limiting language accompanying the former phrase. Section 13-80-105(3), 6 C.R.S. (1985 Supp.), limits the “disability” of minority to minors under six or to minors under eighteen with no natural or legal guardian, but no such limitation is placed on the disability of mental incompetency.
If the General Assembly had intended to limit medical malpractice actions brought by minors regardless of whether the minors were under any other disability, it could have made that intention clear, as have the legislatures of several other states. For example, Indiana’s medical malpractice limitation period for minors is similar to Colorado’s but goes on to state:
[Ejxcept that a minor under the full age of six (6) years shall have until his eighth birthday in which to file. This section applies to all persons regardless of minority or other legal disability.
Ind.Code Ann. § 16-9.5-3-1 (Burns 1983) (emphasis added). Similar provisions can be found in other states. See N.M.Stat.Ann. § 41-5-13 (1978) (three-year medical malpractice statute of limitations, with tolling provision giving minors under six until their ninth birthday in which to file, applies to all persons regardless of minority or other legal disability); Ohio Rev.Code Ann. § 2305.11(B) (Page 1985 Supp.) (four-year medical malpractice limitation period applies to all persons regardless of legal disability, except that minors under ten have until their fourteenth birthday to file); Texas Rev.Civ.Stat.Ann., art. 4590i, § 10.01 (Vernon 1986) (two-year medical malpractice limitation period, allowing minors under twelve until their fourteenth birthday in which to file, applies to all persons regardless of minority or other legal disability); Utah Code Ann. § 78-14-4(2) (1986 Supp.) (two-year limitation provision and four-year repose provision for medical malpractice claims apply to all persons, regardless of minority or other legal disability); Wyo.Stat. § 1-3-107 (1977) (two-year limitation period, with provisions allowing actions to be brought until a minor’s eighth birthday and until one year after the removal of a legal disability, applies to all persons regardless of minority or other legal disability). Since the Colorado legislature did not choose to make the periods of limitation and repose in section 13-80-105, 6 C.R.S. (1985 Supp.), unqualifiedly applicable to all claims filed on behalf of minors, regardless of the existence of a separate [1085]*1085and independent disability such as mental incompetency, we decline to do so here.7
We thus hold that the general tolling provisions of section 13-81-103(1)(a), 6 C.R.S. (1973), apply to a medical malpractice claim brought on behalf of a mentally incompetent person whether that person is a minor or an adult. Under section 13-81-103(1)(a), a legal representative appointed for the person under disability is allowed a period of two years after appointment within which to take action on behalf of the person under disability. Here, Steven’s parents were appointed co-guardians on September 8, 1980, and the suit was filed on August 10, 1982, a date within- two years after their appointment.
III.
We accordingly answer certified questions one and two as follows: (1) the 1977 amendments to the Colorado medical malpractice statute of limitations, § 13-80-105, 6 C.R.S. (1985 Supp.), did not bar this action, notwithstanding the fact that the action was not commenced within one year after the effective date of the 1977 amendments; and (2) the statutory periods of limitation and repose in section 13-80-105, 6 C.R.S. (1985 Supp.), were tolled in this case by reason of Steven Tenney’s mental incompetency until such time as his parents were appointed as co-guardians on September 8, 1980.
We find it unnecessary to answer question three — that is, whether the provisions of section 13-80-105(2), 6 C.R.S. (1985 Supp.), which state that “the limitations period shall not run unless a guardian ad litem is appointed to represent the minor child,” tolled the statute of limitations until the appointment of Steven Tenney’s parents as co-guardians. Our reason for declining to answer question three is that section 13-81-103(1), 6 C.R.S. (1973), establishes mental incompetency as an independent basis to toll the periods of limitation and repose applicable to a medical malpractice claim, and that this statutory toll continues until a legal representative is appointed, in which event the action must be filed within two years following the appointment. Since the instant claim was filed within two years following the appointment of Steven’s parents as co-guardians, we need not consider whether the statutory language of section 13-80-105(2), 6 C.R.S. (1985 Supp.), provided a separate basis to toll the periods of limitation and repose, in section 13-80-105(1), 6 C.R.S. (1985 Supp.).
The action filed by the Tenneys was not time-barred under Colorado law.
ROYIRA, J., dissents.