PT - JOURNAL ARTICLE AU - Tahmeena T. Ali, BSc MD TI - In memoriam Ursus AID - 10.1503/cmaj.1070093 DP - 2007 Sep 25 TA - Canadian Medical Association Journal PG - 752--752-a VI - 177 IP - 7 4099 - http://www.cmaj.ca/content/177/7/752.2.short 4100 - http://www.cmaj.ca/content/177/7/752.2.full SO - CMAJ2007 Sep 25; 177