[Perinatal mortality and twin pregnancy].
D001724:Birth Weight; D002585:Cesarean Section; D005113:Extraction, Obstetrical; D005260:Female; D005859:Germany, East; D006801:Humans; D007226:Infant Mortality; D007231:Infant, Newborn; D007234:Infant, Premature; D011247:Pregnancy; D011295:Prenatal Care; D013222:State Medicine; D014427:Twins
Perinatale Mortalität und Zwillingsschwangerschaft.