title: Perinatal loss in twin pregnancy: past experience and prospects.
mesh_terms: D001722:Birth Order; D001724:Birth Weight; D005006:Ethnicity; D005260:Female; D005313:Fetal Death / Q000517:prevention & control; D006801:Humans; D007226:Infant Mortality; D007231:Infant, Newborn; D007746:Labor Presentation; D010298:Parity; D011247:Pregnancy; D011248:Pregnancy Complications; D011272:Pregnancy, Multiple; D011295:Prenatal Care; D011296:Prenatal Diagnosis; D012923:Social Class; D013997:Time Factors; D014427:Twins