PT - JOURNAL ARTICLE AU - Barbara Sibbald TI - US hospitals balking at smallpox vaccination DP - 2003 Apr 15 TA - Canadian Medical Association Journal PG - 1034--1034-a VI - 168 IP - 8 4099 - http://www.cmaj.ca/content/168/8/1034.2.short 4100 - http://www.cmaj.ca/content/168/8/1034.2.full SO - CMAJ2003 Apr 15; 168