1. Use of anthrax vaccine in the United States: recommendation of the advising committee on immunization practices. MMWR Morb Mortal Wkly Rep 2000;49(Dec 15):1-20. Available at: http://www.cdc.gov/mmwr/PDF/RR/RR4915.pdf
2. Health aspects of chemical and biological weapons: a report of a WHO group of consultants. Geneva (Switzerland): World Health Organization; 1970
3. Information about the anthrax vaccine and the Anthrax Vaccine Immunization Program (AVIP). Available at: http://www.anthrax.osd.mil. Accessed May 12, 2002
4. Biological Disease/Agent Listing. Available at: http://bt.cdc.gov. Accessed September 24, 2002
5. Fermentation, purification, and characterization of protective antigen from a recombinant, avirulent strain of Bacillus anthracis;Farchaus;Appl Environ Microbiol,1998