title: Fraternal or identical: understanding twin gestation.
authors.affiliation: Creighton University, Omaha, Nebraska, USA.
authors.forename: Lori Baas
authors.initials: LB
authors.lastname: Rubarth
mesh_terms: D005260:Female; D006801:Humans; D011247:Pregnancy; D011272:Pregnancy, Multiple / Q000502:physiology*; D014429:Twins, Dizygotic / Q000502:physiology*; D014430:Twins, Monozygotic / Q000502:physiology*