title: Culture conditions and not prolonged culture time are responsible for monozygotic twinning in human in vitro fertilization.
authors.forename: Guy
authors.initials: G
authors.lastname: Cassuto
authors.forename: Martine
authors.initials: M
authors.lastname: Chavrier
authors.forename: Yves
authors.initials: Y
authors.lastname: Menezo
mesh_terms: D002478:Cells, Cultured; D005260:Female; D005307:Fertilization in Vitro; D006801:Humans; D011247:Pregnancy; D011272:Pregnancy, Multiple; D012189:Retrospective Studies; D020554:Sperm Injections, Intracytoplasmic; D013997:Time Factors; D014430:Twins, Monozygotic