(a) Nothing in this chapter shall be construed to require compliance with the procedures herein, or prevent the medical treatment of any person by any physician duly licensed to practice medicine in this State, when such treatment may result in an inability to procreate as a secondary effect; provided that such treatment is to remedy a substantial danger to life or health and under usual circumstances for elective surgery such secondary effect is explained to the person and the person gives informed consent thereto or that a bona fide emergency prevents such explanation and consent.
(b) Nothing in this chapter shall be construed to prevent the sterilization by any licensed physician of any person 18 or more years of age who voluntarily, knowingly and personally requests such treatment and gives informed consent thereto.
(c) Nothing in this chapter shall be construed to permit the involuntary sterilization of a person confined to any correctional institution on the basis of such confinement.
(d) All other sterilizations shall be in accordance with this chapter.