Precancerous and cancerous lesions in the lower bowel; incidence in 500 asymptomatic patients.
YATER
W M
WM
YOUNG
V T
VT
D006801:Humans; D015994:Incidence; D007414:Intestinal Neoplasms; D007422:Intestines; D009369:Neoplasms; D012812:Sigmoidoscopy