title: Esophageal cancer in the Transkei: 1955-69.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D002294:Carcinoma, Squamous Cell / Q000453:epidemiology*; D002648:Child; D002675:Child, Preschool; D004938:Esophageal Neoplasms / Q000453:epidemiology*; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D008875:Middle Aged; D012737:Sex Factors; D013019:South Africa