| Subsection (a) provides for a challenge to a husband's |
| presumed paternity if the conception of the child was through |
| assisted reproduction not consented to by the husband before or |
| after the birth of the child. If a proceeding to establish |
| nonpaternity is timely filed and the husband's lack of consent is |
| demonstrated, the child will be without a legally-recognized |
| father because the sperm donor is not the father under § 702, |
| supra. Because the filing of such a nonpaternity proceeding is |
| permitted within two years of the husband's learning of the |
| child's birth, the period of uncertainty concerning the identity |
| of the child's father will be longer than two years in a |
| situation in which an absent husband is not immediately made |
| aware of the child's birth. |