Colorectal cancer screening.
Clark
R A
RA
Halpert
R D
RD
D001466:Barium Sulfate; D003113:Colonoscopy; D015179:Colorectal Neoplasms / Q000175:diagnosis*; D004733:Enema; D006801:Humans; D008403:Mass Screening / Q000379:methods*
D001466:Barium Sulfate