title: Analysis of multiple birth rates in Japan. IV. Secular trend, effect of maternal age and gestational age in stillbirth rates of triplets.
mesh_terms: D001723:Birth Rate; D005260:Female; D005313:Fetal Death / Q000453:epidemiology*; D005865:Gestational Age; D006801:Humans; D007231:Infant, Newborn; D007564:Japan; D008297:Male; D008423:Maternal Age; D011247:Pregnancy; D014310:Triplets