PT - JOURNAL ARTICLE ED - , TI - Query AID - 10.1503/cmaj.061542 DP - 2007 Apr 10 TA - Canadian Medical Association Journal PG - 1240--1240 VI - 176 IP - 8 4099 - http://www.cmaj.ca/content/176/8/1240.short 4100 - http://www.cmaj.ca/content/176/8/1240.full SO - CMAJ2007 Apr 10; 176