PT - JOURNAL ARTICLE AU - Timothy Mead TI - You can’t measure pain DP - 2011 Jul 01 TA - Canadian Family Physician PG - 764--764 VI - 57 IP - 7 4099 - http://www.cfp.ca/content/57/7/764.short 4100 - http://www.cfp.ca/content/57/7/764.full SO - Can Fam Physician2011 Jul 01; 57