PT - JOURNAL ARTICLE ED - , TI - Corrections AID - 10.1503/cmaj.060517 DP - 2006 May 23 TA - Canadian Medical Association Journal PG - 1599--1599-b VI - 174 IP - 11 4099 - http://www.cmaj.ca/content/174/11/1599.3.short 4100 - http://www.cmaj.ca/content/174/11/1599.3.full SO - CMAJ2006 May 23; 174