PT - JOURNAL ARTICLE AU - Bernard Prigent TI - An evaluation of class effect AID - 10.1503/cmaj.1050129 DP - 2006 Feb 14 TA - Canadian Medical Association Journal PG - 502--502 VI - 174 IP - 4 4099 - http://www.cmaj.ca/content/174/4/502.1.short 4100 - http://www.cmaj.ca/content/174/4/502.1.full SO - CMAJ2006 Feb 14; 174