1. Office of Surveillance and Epidemiology; U.S. Food and Drug Administration; Silver Spring MD USA
2. Department of Biostatistics and Epidemiology; University of Pennsylvania Perelman School of Medicine; Philadelphia PA USA
3. Biostatistics Research Branch; National Institute of Allergy and Infectious Diseases; National Institutes of Health; Bethesda MD USA
4. Clinical Center Pharmacy Department; National Institutes of Health; Bethesda MD USA
5. Laboratory of Clinical Infectious Diseases; National Institute of Allergy and Infectious Diseases; National Institutes of Health; Bethesda MD USA
6. Department of Pharmacotherapy; University of North Texas System College of Pharmacy; Fort Worth TX USA