RT Journal Article SR Electronic T1 Colorectal cancer screening JF Clinical Medicine JO Clin Med FD Royal College of Physicians SP 453 OP 456 DO 10.7861/clinmedicine.6-5-453 VO 6 IS 5 A1 BH Hayee A1 G Chung-Faye YR 2006 UL http://www.rcpjournals.org/content/6/5/453.abstract AB