Screening for gastrointestinal cancer.
D000328:Adult; D000368:Aged; D004938:Esophageal Neoplasms / Q000517:prevention & control; D005260:Female; D005770:Gastrointestinal Neoplasms / Q000175:diagnosis / Q000517:prevention & control*; D006801:Humans; D008297:Male; D008403:Mass Screening; D008722:Methods; D008875:Middle Aged; D010190:Pancreatic Neoplasms / Q000517:prevention & control; D012306:Risk