Nutrition and vitamin A.
D005260:Female; D006801:Humans; D007774:Lactation; D008297:Male; D009747:Nutritional Physiological Phenomena; D009751:Nutritional Requirements; D011247:Pregnancy; D014801:Vitamin A / Q000627:therapeutic use; D014802:Vitamin A Deficiency / Q000175:diagnosis / Q000188:drug therapy / Q000209:etiology
D014801:Vitamin A