PT - JOURNAL ARTICLE AU - Jeff Nisker TI - Philip DP - 2003 Mar 18 TA - Canadian Medical Association Journal PG - 746--747 VI - 168 IP - 6 4099 - http://www.cmaj.ca/content/168/6/746.short 4100 - http://www.cmaj.ca/content/168/6/746.full SO - CMAJ2003 Mar 18; 168