1. Johns Hopkins Center for Civilian Biodefense Strategies Web site. Available at: http://www.hopkins-biodefense.org/. Accessed 12 February 2002.
2. Center for Strategic and International Studies Web site. Available at: http://www.csis.org/. Accessed 12 February 2002.
3. Analytic Services Inc (ANSER) Institute for Homeland Security Web site. Available at: http://www.anser.org/. Accessed 12 February 2002.
4. Oklahoma National Memorial Institute for the Prevention of Terrorism Web site. Available at: http://www.mipt.org/. Accessed 12 February 2002.
5. The Looming Threat of Bioterrorism