TY - JOUR T1 - <em>C. difficile</em> strain 20 times more virulent JF - Canadian Medical Association Journal JO - CMAJ SP - 1279 LP - 1279 DO - 10.1503/cmaj.050470 VL - 172 IS - 10 AU - Laura Eggertson Y1 - 2005/05/10 UR - http://www.cmaj.ca/content/172/10/1279.1.abstract ER -