title: Perinatal mortality-incidence and effect of various maternal factors, Part I.
mesh_terms: D000017:ABO Blood-Group System; D000293:Adolescent; D000328:Adult; D005260:Female; D005313:Fetal Death / Q000453:epidemiology*; D006801:Humans; D007194:India; D007226:Infant Mortality; D007231:Infant, Newborn; D008423:Maternal Age; D011247:Pregnancy; D011248:Pregnancy Complications / Q000453:epidemiology*; D018566:Pregnancy, High-Risk
chemical_list: D000017:ABO Blood-Group System