TY - JOUR T1 - Cross-Canada colorectal cancer screening programs remain elusive JF - Canadian Medical Association Journal JO - CMAJ SP - 555 LP - 556 DO - 10.1503/cmaj.071127 VL - 177 IS - 6 AU - Dan Lett Y1 - 2007/09/11 UR - http://www.cmaj.ca/content/177/6/555.abstract ER -