title: Epidemiology and diagnosis of twin gestation.
authors.affiliation: University of Washington, Seattle.
authors.forename: K A
authors.initials: KA
authors.lastname: Hollenbach
authors.forename: D E
authors.initials: DE
authors.lastname: Hickok
mesh_terms: D015981:Epidemiologic Factors; D005260:Female; D006801:Humans; D011247:Pregnancy; D011272:Pregnancy, Multiple; D014427:Twins