PT - JOURNAL ARTICLE ED - , TI - Query AID - 10.1503/cmaj.050534 DP - 2006 Jun 06 TA - Canadian Medical Association Journal PG - 1808--1808 VI - 174 IP - 12 4099 - http://www.cmaj.ca/content/174/12/1808.short 4100 - http://www.cmaj.ca/content/174/12/1808.full SO - CMAJ2006 Jun 06; 174