TY - JOUR T1 - Clarification JF - Canadian Medical Association Journal JO - CMAJ SP - 1895 LP - 1895-a DO - 10.1503/cmaj.1040916 VL - 170 IS - 13 A2 - , Y1 - 2004/06/22 UR - http://www.cmaj.ca/content/170/13/1895.2.abstract ER -