[Nutritional deficiency, allergic factors, toxic factors].
D003677:Deficiency Diseases / Q000150:complications*; D006801:Humans; D006967:Hypersensitivity; D007154:Immune System Diseases; D010437:Peptic Ulcer / Q000209:etiology*
ALLERGY; DEFICIENCY DISEASES/complications; PEPTIC ULCER/etiology and pathogenesis
Carencias alimentares, factor alérgico, factores tóxicos.