RT Journal Article SR Electronic T1 Treating C. difficile JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 447 OP 448 DO 10.1503/cmaj.1041646 VO 172 IS 4 A1 Johnston, Bradley C. A1 Vohra, Sunita YR 2005 UL http://www.cmaj.ca/content/172/4/447.3.abstract