PT - JOURNAL ARTICLE AU - Roger Collier TI - Dens of inactivity AID - 10.1503/cmaj.109-3808 DP - 2011 Mar 08 TA - Canadian Medical Association Journal PG - E225--E226 VI - 183 IP - 4 4099 - http://www.cmaj.ca/content/183/4/E225.short 4100 - http://www.cmaj.ca/content/183/4/E225.full SO - CMAJ2011 Mar 08; 183