Screening for oesophageal cancer in 62 000 Chinese.
D000328:Adult; D002278:Carcinoma in Situ / Q000453:epidemiology*; D002681:China; D004938:Esophageal Neoplasms / Q000453:epidemiology*; D006801:Humans; D008403:Mass Screening; D011230:Precancerous Conditions / Q000453:epidemiology*