PT - JOURNAL ARTICLE ED - , TI - Correction DP - 2010 Jan 01 TA - Canadian Family Physician PG - 18--18 VI - 56 IP - 1 4099 - http://www.cfp.ca/content/56/1/18.4.short 4100 - http://www.cfp.ca/content/56/1/18.4.full SO - Can Fam Physician2010 Jan 01; 56