title: Response to Slotnich and ortega [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; 13:381-385)].
authors.forename: D R
authors.initials: DR
authors.lastname: Meldrum
authors.forename: M
authors.initials: M
authors.lastname: Hamilton
mesh_terms: D003625:Data Collection; D005307:Fertilization in Vitro / Q000379:methods*; D008846:Micromanipulation / Q000379:methods*; D014427:Twins; D014430:Twins, Monozygotic; D014481:United States