title: Carcinoma oesophagus.
authors.forename: W U
authors.initials: WU
authors.lastname: Ahmed
mesh_terms: D002277:Carcinoma / Q000453:epidemiology / Q000209:etiology*; D004938:Esophageal Neoplasms / Q000453:epidemiology / Q000209:etiology*; D006801:Humans; D010947:Plants, Toxic; D012307:Risk Factors; D012907:Smoking / Q000009:adverse effects; D014030:Tobacco, Smokeless / Q000009:adverse effects