PT - JOURNAL ARTICLE AU - Winawer, Sidney J. AU - Zauber, Ann G. TI - Colorectal cancer screening: Now is the time DP - 2000 Sep 05 TA - Canadian Medical Association Journal PG - 543--544 VI - 163 IP - 5 4099 - http://www.cmaj.ca/content/163/5/543.short 4100 - http://www.cmaj.ca/content/163/5/543.full SO - CMAJ2000 Sep 05; 163