PT - JOURNAL ARTICLE ED - , TI - Query AID - 10.1503/cmaj.1031873 DP - 2004 Sep 14 TA - Canadian Medical Association Journal PG - 694--694 VI - 171 IP - 6 4099 - http://www.cmaj.ca/content/171/6/694.short 4100 - http://www.cmaj.ca/content/171/6/694.full SO - CMAJ2004 Sep 14; 171