PT - JOURNAL ARTICLE ED - , TI - Contagion AID - 10.1503/cmaj.1041530 DP - 2004 Oct 12 TA - Canadian Medical Association Journal PG - 910--910 VI - 171 IP - 8 4099 - http://www.cmaj.ca/content/171/8/910.1.short 4100 - http://www.cmaj.ca/content/171/8/910.1.full SO - CMAJ2004 Oct 12; 171