Survey of cancer of the oesophagus in relation to other malignant neoplasms.
D000328:Adult; D000368:Aged; D004938:Esophageal Neoplasms / Q000453:epidemiology* / Q000473:pathology; D004947:Esophagus / Q000473:pathology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009369:Neoplasms / Q000453:epidemiology*; D011156:Population Density; D013019:South Africa