PT - JOURNAL ARTICLE ED - , TI - Corrections AID - 10.1503/cmaj.060639 DP - 2006 Jun 20 TA - Canadian Medical Association Journal PG - 1874--1874-b VI - 174 IP - 13 4099 - http://www.cmaj.ca/content/174/13/1874.3.short 4100 - http://www.cmaj.ca/content/174/13/1874.3.full SO - CMAJ2006 Jun 20; 174