RT Journal Article SR Electronic T1 Smallpox and bioterrorism (November/December 1999) JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 360 OP 360 VO 69 IS 5 A1 David M. Huff YR 2002 UL http://www.ccjm.org/content/69/5/360.1.abstract AB