PT - JOURNAL ARTICLE ED - , TI - Query AID - 10.1503/cmaj.061444 DP - 2007 Jan 02 TA - Canadian Medical Association Journal PG - 136--136 VI - 176 IP - 1 4099 - http://www.cmaj.ca/content/176/1/136.short 4100 - http://www.cmaj.ca/content/176/1/136.full SO - CMAJ2007 Jan 02; 176