PT - JOURNAL ARTICLE AU - TI - Query AID - 10.1503/cmaj.1040459 DP - 2004 Dec 07 TA - Canadian Medical Association Journal PG - 1569--1569 VI - 171 IP - 12 4099 - http://www.cmaj.ca/content/171/12/1569.short 4100 - http://www.cmaj.ca/content/171/12/1569.full SO - CMAJ2004 Dec 07; 171