Etiology of gastrointestinal cancer in man.
D000434:Alcoholic Beverages; D003110:Colonic Neoplasms / Q000209:etiology; D004032:Diet; D004938:Esophageal Neoplasms / Q000209:etiology*; D005007:Ethnology; D005770:Gastrointestinal Neoplasms / Q000235:genetics; D006801:Humans; D012004:Rectal Neoplasms / Q000209:etiology; D012907:Smoking; D012924:Social Conditions; D013274:Stomach Neoplasms / Q000209:etiology*