(a) All children born within wedlock or within the usual period of gestation thereafter who have been conceived by means of artificial insemination, in vitro fertilization, or other similar method of assisted reproduction are irrebuttably presumed legitimate if both spouses have consented in writing to the use and administration of artificial insemination, in vitro fertilization, or other similar method of assisted reproduction.

(b) Subsection (a) of this Code section shall be subject to Article 2 of Chapter 8 of this title, and, in the event of a conflict, the provisions of such article shall prevail.