Freezing of embryos. An ethical obligation.
D004624:Embryo Transfer; D004622:Embryo, Mammalian; D028741:Ethics Committees, Clinical; D028744:Ethics Committees, Research; D004992:Ethics, Medical; D005260:Female; D005307:Fertilization in Vitro; D005615:Freezing; D006801:Humans; D011247:Pregnancy; D012106:Research