Epidemiology clues to the etiology of SIDS.
D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D011247:Pregnancy; D011248:Pregnancy Complications / Q000209:etiology; D012306:Risk; D012959:Socioeconomic Factors; D013398:Sudden Infant Death / Q000453:epidemiology / Q000209:etiology*