Article 144 — — (2) Action for Judicial Declaration of Paternity.

An action brought for judicial declaration of paternity, based on the provisions of the preceding Article shall be of no effect under the following conditions: (a) In the case where the mother of the child had sexual relationship with another man in the period regarded by law as the period of pregnancy unless it is proved by medical or other reliable evidence that such man is not the father of the child; (b) In the case where the claimed person could not be the father of the child for he was absent or has been a victim the of accident during the period regarded by law as the period of pregnancy. (c) In the case where the person claimed to be the father of the child decisively proves by blood examination or other reliable medical evidence -that he could not be the father of the child.