Oesophageal carcinoma in Africa.
D000349:Africa; D000428:Alcohol Drinking; D001515:Beer; D004938:Esophageal Neoplasms / Q000139:chemically induced / Q000453:epidemiology*; D006801:Humans; D009602:Nitrosamines; D012042:Registries; D003313:Zea mays
D009602:Nitrosamines