Next: twin tube babies?
Shearer
Lloyd
L
D004624:Embryo Transfer; D005307:Fertilization in Vitro; D033161:Government Regulation; D049673:History, 20th Century; D006801:Humans; D008722:Methods; D012926:Social Control, Formal; D038522:Twinning, Monozygotic; D014427:Twins; D006113:United Kingdom; D014481:United States