The search for indices.
D001724:Birth Weight; D003430:Cross-Sectional Studies; D005260:Female; D005313:Fetal Death / Q000453:epidemiology* / Q000209:etiology; D006801:Humans; D007226:Infant Mortality; D007230:Infant, Low Birth Weight; D007231:Infant, Newborn; D008430:Maternal-Child Health Centers / Q000600:supply & distribution; D009664:Norway; D010500:Perinatology / Q000592:standards*; D011247:Pregnancy; D011295:Prenatal Care; D012015:Reference Standards; D012306:Risk