RT Journal Article SR Electronic T1 Is 45 the new 50 in colorectal cancer screening? JF Canadian Family Physician JO Can Fam Physician FD The College of Family Physicians of Canada SP 743 OP 743 VO 66 IS 10 A1 Fritsch, Paul A1 Wong, Clarence A1 Kolber, Michael R. YR 2020 UL http://www.cfp.ca/content/66/10/743.abstract AB