No consent shall be required in order for a licensed physician, psychiatrist or psychologist to render any legally authorized medical or mental health services to a person when said person is either physically unable to consent or mentally unable to consent and who, but for said mental or physical disability, would be able to consent and who has no known relatives or legal guardian; provided, that two or more licensed physicians, psychiatrists or psychologists, after having consultation, must indicate, in writing, that such medical services are necessary, in their judgment, and any attempt to secure consent from any court or to further endeavor to locate unknown relatives would result in delay of treatment which would increase the risk to the person's life or health.

When a person, minor or adult, has not lived with his or her husband or wife for a period of one year or longer and when the location of said person's husband or wife is not known by the person whose husband or wife is missing, then such person, minor or adult, may give his or her consent to any legally authorized medical, dental, health or mental health services, and the consent of the missing husband or wife shall not be required.

Any legally authorized medical, dental, health or mental health services may be rendered to minors of any age without the consent of a parent or legal guardian when, in the physician's judgment, an attempt to secure consent would result in delay of treatment which would increase the risk to the minor's life, health or mental health.

Any minor who is 14 years of age or older, or has graduated from high school, or is married, or having been married is divorced or is pregnant may give effective consent to any legally authorized medical, dental, health or mental health services for himself or herself, and the consent of no other person shall be necessary.

Any minor who is married, or having been married is divorced or has borne a child may give effective consent to any legally authorized medical, dental, health or mental health services for himself or his child or for herself or her child.

Any minor may give effective consent for any legally authorized medical, health or mental health services to determine the presence of, or to treat, pregnancy, venereal disease, drug dependency, alcohol toxicity or any reportable disease, and the consent of no other person shall be deemed necessary.

(a) The consent of a minor who professes to be, but is not, a minor whose consent alone is effective to medical, dental, health or mental health services shall be deemed effective without the consent of the minor's parent or legal guardian if the physician or other person relied in good faith upon the presentations of the minor.

(b) Any physician or other person who has relied in good faith upon the representations of any persons under any of the provisions of this chapter or who acts in good faith under any of the provisions of this chapter shall not be liable for not having consent.

(c) No provision of this chapter shall be interpreted to empower any minor, mental incompetent or any other person who is not otherwise by law entitled to enter into a binding agreement to, expressly or impliedly, waive any right or cause of action arising by virtue of any treatment or procedure described in this chapter.

Consents authorized by this chapter are cumulative to all other existing legal consents, and this chapter is not to be construed as revoking any existing legal consents to any authorized legal, dental, mental health or health service.

Any minor who is 14 years of age or older, or has graduated from high school, or is married, or having been married is divorced or is pregnant, may give effective consent to the donation of his or her bone marrow for the purpose of bone marrow transplantation. A parent or legal guardian may consent to such bone marrow donation on behalf of any other minor.