RT Journal Article SR Electronic T1 Quebec strain of C. difficile in 7 provinces JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 607 OP 608 DO 10.1503/cmaj.060105 VO 174 IS 5 A1 Laura Eggertson YR 2006 UL http://www.cmaj.ca/content/174/5/607.2.abstract