PT - JOURNAL ARTICLE AU - Katzmarzyk, Peter T. AU - Mason, Caitlin TI - Prevalence of class I, II and III obesity in Canada AID - 10.1503/cmaj.050806 DP - 2006 Jan 17 TA - Canadian Medical Association Journal PG - 156--157 VI - 174 IP - 2 4099 - http://www.cmaj.ca/content/174/2/156.short 4100 - http://www.cmaj.ca/content/174/2/156.full SO - CMAJ2006 Jan 17; 174