Screening for carcinoma of the oesophagus.
van der Merwe
C F
CF
D002294:Carcinoma, Squamous Cell / Q000517:prevention & control*; D004938:Esophageal Neoplasms / Q000517:prevention & control*; D005260:Female; D006801:Humans; D008297:Male; D008403:Mass Screening; D008875:Middle Aged; D013019:South Africa / Q000453:epidemiology