Night blindness associated with vitamin A deficiency in countries of south-east Asia.
D001459:Bangladesh; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007194:India; D008297:Male; D009755:Night Blindness / Q000453:epidemiology*; D014802:Vitamin A Deficiency / Q000453:epidemiology*