title: [The obstetric risk of the 2n twin. Clinico-statistical considerations on 108 cases of twin pregnancy].
mesh_terms: D001034:Apgar Score; D002585:Cesarean Section; D036861:Delivery, Obstetric; D005113:Extraction, Obstetrical; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007746:Labor Presentation; D011247:Pregnancy; D011272:Pregnancy, Multiple; D012306:Risk; D014427:Twins
vernacular_title: Il rischio ostetrico del secondo gemello. Considerazioni clinico-statistiche su 108 casi di gravidanza gemellare