title: In vitro fertilization--a fast changing technique: a discussion paper.
mesh_terms: D004624:Embryo Transfer / Q000379:methods; D004626:Embryology / Q000639:trends; D004992:Ethics, Medical; D005260:Female; D005307:Fertilization in Vitro / Q000379:methods*; D006176:Gynecology / Q000639:trends; D006801:Humans; D007247:Infertility, Female / Q000628:therapy