title: Twins with 54 days between deliveries. Case report.
mesh_terms: D000328:Adult; D036861:Delivery, Obstetric; D005260:Female; D006801:Humans; D007752:Obstetric Labor, Premature / Q000628:therapy; D011247:Pregnancy; D011272:Pregnancy, Multiple; D013997:Time Factors; D014427:Twins