RT Journal Article SR Electronic T1 Population-based fecal occult blood screening for colon cancer: Will the benefits outweigh the harm? JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 545 OP 546 VO 163 IS 5 A1 Marshall, Kenneth G. YR 2000 UL http://www.cmaj.ca/content/163/5/545.abstract