Selective fetal reduction.
D000032:Abortion, Therapeutic; D000328:Adult; D010064:Embryo Implantation; D004624:Embryo Transfer; D004992:Ethics, Medical; D005260:Female; D005307:Fertilization in Vitro; D006801:Humans; D011247:Pregnancy; D011248:Pregnancy Complications / Q000209:etiology; D011272:Pregnancy, Multiple; D018570:Risk Assessment; D012307:Risk Factors