[Prematurity in twin pregnancy].
D005260:Female; D005865:Gestational Age; D006801:Humans; D007231:Infant, Newborn; D007234:Infant, Premature; D007744:Obstetric Labor Complications / Q000517:prevention & control; D007752:Obstetric Labor, Premature; D011247:Pregnancy; D014427:Twins
Problem wcześniactwa w porodzie bliźniaczym.