1. Notice to readers;MMWR Morb Mortal Wkly Rep,2001
2. Update;MMWR Morb Mortal Wkly Rep,2001
3. Update;MMWR Morb Mortal Wkly Rep,2001
4. Hensley S. Purchases of antibiotic jump on fears of bioterrorism, but doctors see risks. Wall Street Journal. October 9, 2001:A1
5. Petersen M, Pear R. Anthrax fears send demand for a drug far beyond output. New York Times. October 16, 2001:A1