title: ABC of nutrition. Vitamins I.
mesh_terms: D000328:Adult; D006801:Humans; D006986:Hypervitaminosis A; D009525:Niacin / Q000009:adverse effects / Q000172:deficiency; D009751:Nutritional Requirements; D012257:Riboflavin Deficiency; D013832:Thiamine Deficiency; D014802:Vitamin A Deficiency; D014815:Vitamins
chemical_list: D014815:Vitamins; D009525:Niacin