[Studies on the problem of premature births during the last 5 years (1968-1972)].
D001787:Blood Group Incompatibility / Q000150:complications; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007234:Infant, Premature; D007558:Italy; D007752:Obstetric Labor, Premature / Q000453:epidemiology* / Q000209:etiology; D010927:Placental Insufficiency / Q000150:complications; D011247:Pregnancy; D012204:Rh-Hr Blood-Group System
D012204:Rh-Hr Blood-Group System
Osservazioni sul problema della prematurità relativamente all'ultimo quinquennio (1968-1972)