Screening sigmoidoscopy for colorectal cancer.
Selby
J V
JV
Division of Research, Kaiser Permanente, Oakland, CA.
D015179:Colorectal Neoplasms / Q000517:prevention & control*; D006801:Humans; D008403:Mass Screening / Q000379:methods*; D008875:Middle Aged; D012812:Sigmoidoscopy; D013997:Time Factors