TY - JOUR T1 - Periodic health examination, 1989 update: 2. Early detection of colorectal cancer and problem drinking [corrected] JF - Canadian Medical Association Journal JO - CMAJ SP - 209 LP - 216 VL - 141 IS - 3 A2 - , Y1 - 1989/08/01 UR - http://www.cmaj.ca/content/141/3/209.abstract ER -