1. Infectious Disease Clinical Research Program; Department of Preventive Medicine and Biostatistics; Uniformed Services University of the Health Sciences; Bethesda Maryland
2. Division of Infectious Diseases; Naval Medical Center of San Diego; San Diego California
3. Henry M. Jackson Foundation for the Advancement of Military Medicine; Bethesda Maryland
4. Division of Infectious Diseases; Walter Reed Medical Center; Bethesda Maryland
5. Infectious Disease Service; San Antonio Military Medical Center; San Antonio Texas
6. Division of Infectious Diseases; Naval Medical Center Portsmouth; Portsmouth Virginia
7. Biostatistics Center; Department of Epidemiology and Biostatistics; The George Washington University; Washington District of Columbia