title: Epidemiologic aspects of the postdate pregnancy.
authors.affiliation: Queen of the Valley Hospital, West Covina, CA 91790.
authors.forename: M O
authors.initials: MO
authors.lastname: Ahn
authors.forename: J P
authors.initials: JP
authors.lastname: Phelan
mesh_terms: D005260:Female; D006801:Humans; D011247:Pregnancy; D011273:Pregnancy, Prolonged; D012307:Risk Factors