PT - JOURNAL ARTICLE ED - , TI - RxFiles DP - 2007 Mar 01 TA - Canadian Family Physician PG - 495--495 VI - 53 IP - 3 4099 - http://www.cfp.ca/content/53/3/495.short 4100 - http://www.cfp.ca/content/53/3/495.full SO - Can Fam Physician2007 Mar 01; 53