title: Response to Meldrum and Hamilton [monoamniotic twinning and zone manipulation: a survey of U.S. IVF centers correlating zona manipulation procedures and high-risk twinning frequency (J Assist Reprod Genet 1996;13-748)].
authors.forename: R N
authors.initials: RN
authors.lastname: Slotnick
mesh_terms: D005260:Female; D005307:Fertilization in Vitro / Q000379:methods*; D006801:Humans; D011247:Pregnancy; D011272:Pregnancy, Multiple / Q000706:statistics & numerical data*; D012306:Risk; D014430:Twins, Monozygotic; D015044:Zona Pellucida / Q000502:physiology*