Sudden infant death syndrome: is the winter prepoderance due to some infants having the head covered?
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D001512:Bedding and Linens; D003020:Clothing; D006801:Humans; D007223:Infant; D012307:Risk Factors; D012621:Seasons; D013021:South Australia / Q000453:epidemiology; D013398:Sudden Infant Death / Q000453:epidemiology*