title: Superfecundation and superfetation: lessons from the past on early human development.
authors.forename: Isaac
authors.initials: I
authors.lastname: Blickstein
mesh_terms: D005314:Embryonic and Fetal Development; D005260:Female; D006801:Humans; D011247:Pregnancy; D013476:Superfetation; D014429:Twins, Dizygotic