title: Analysis of multiple births in Japan. III. Analysis of factors affecting birth weight of twins and triplets.
mesh_terms: D000328:Adult; D001724:Birth Weight; D005260:Female; D005865:Gestational Age; D006801:Humans; D007231:Infant, Newborn; D007564:Japan; D011247:Pregnancy; D014310:Triplets; D014427:Twins