(a) Every person who performs or induces an abortion shall prior thereto have made a determination based on his experience, judgment or professional competence that the fetus is not viable, and if the determination is that the fetus is viable or if there is sufficient reason to believe that the fetus may be viable, shall exercise that degree of professional skill, care and diligence to preserve the life and health of the fetus which such person would be required to exercise in order to preserve the life and health of any fetus intended to be born and not aborted and the abortion technique employed shall be that which would provide the best opportunity for the fetus to be aborted alive so long as a different technique would not be necessary in order to preserve the life or health of the mother.