title: Heterotopic pregnancies and in vitro fertilization.
authors.forename: A
authors.initials: A
authors.lastname: Jacobson
authors.forename: D I
authors.initials: DI
authors.lastname: Galen
mesh_terms: D005260:Female; D005307:Fertilization in Vitro; D006801:Humans; D011247:Pregnancy; D011271:Pregnancy, Ectopic / Q000175:diagnosis