1. Department of Medicine, Infectious Disease Service, San Antonio Military Medical Center, 3551 Roger Brooke Drive, JBSA Fort Sam Houston, TX
2. Department of Medicine, Uniformed Services University of the Health Sciences, 4301 Jones Bridge Rd, Bethesda, MD
3. Division of Infectious Diseases, Oregon Health & Science University, Mail Code L457, 3181 SW Sam Jackson Park Road, Portland, OR
4. Department of Infectious Diseases, Walter Reed National Military Medical Center, 4494 North Palmer Road, Bethesda, MD