PT - JOURNAL ARTICLE AU - Dufour, Christian TI - Puzzling result DP - 2011 Jul 01 TA - Canadian Family Physician PG - 761--761 VI - 57 IP - 7 4099 - http://www.cfp.ca/content/57/7/761.3.short 4100 - http://www.cfp.ca/content/57/7/761.3.full SO - Can Fam Physician2011 Jul 01; 57