title: [The 1st 5 years of registration of twin births in Budapest, 1970-1975].
mesh_terms: D001722:Birth Order; D001723:Birth Rate; D005260:Female; D005313:Fetal Death; D006801:Humans; D006814:Hungary; D008297:Male; D011247:Pregnancy; D014427:Twins; D014429:Twins, Dizygotic; D014430:Twins, Monozygotic
vernacular_title: A budapesti ikernyilvántartás elsö 5 éve: 1970-1974.