Screening colonoscopy vs flexible sigmoidoscopy.
Sudha
S
Xirasagar
Charles L
CL
Bennett
James R
JR
Hebert
D003113:Colonoscopy; D015179:Colorectal Neoplasms / Q000175:diagnosis*; D006801:Humans; D016032:Randomized Controlled Trials as Topic; D012107:Research Design; D012812:Sigmoidoscopy