PT - JOURNAL ARTICLE AU - Keith M. Laycock TI - Response DP - 2011 Mar 01 TA - Canadian Family Physician PG - 278--279 VI - 57 IP - 3 4099 - http://www.cfp.ca/content/57/3/278.3.short 4100 - http://www.cfp.ca/content/57/3/278.3.full SO - Can Fam Physician2011 Mar 01; 57