Sigmoidoscopy: case finding versus screening.
Winawer
S J
SJ
Gastrointestinal Cancer Research, Memorial Sloan-Kettering Cancer Center, New York, New York 10021.
Kerner
J F
JF
D003110:Colonic Neoplasms / Q000175:diagnosis / Q000517:prevention & control*; D006801:Humans; D008403:Mass Screening; D012004:Rectal Neoplasms / Q000175:diagnosis / Q000517:prevention & control*; D012812:Sigmoidoscopy; D014481:United States