TY - JOUR T1 - Health care as a risk factor JF - Canadian Medical Association Journal JO - CMAJ SP - 1688 LP - 1689 DO - 10.1503/cmaj.1040690 VL - 170 IS - 11 AU - Peter Davis Y1 - 2004/05/25 UR - http://www.cmaj.ca/content/170/11/1688.abstract ER -