1. University of Iowa College of Medicine, Iowa City, Iowa
2. AstraZeneca, Macclesfield, Cheshire, United Kingdom
3. VCU Medical Center, Richmond, Virginia
4. HPA Centre for Infections, Kingsdown, Bristol, United Kingdom
5. University of Wisconsin, Madison, Wisconsin
6. New York State Department of Health, Albany, New York
7. Case Western Reserve University, Cleveland, Ohio
8. University of Aberdeen, Aberdeen, Scotland, United Kingdom
9. University of Texas Health Science Center, San Antonio, Texas
10. Pfizer, Inc., New York, New York
11. Pfizer Global Research and Development, Sandwich, Kent, United Kingdom
12. National Cancer Institute, Bethesda, Maryland
13. Centers for Disease Control and Prevention, Atlanta, Georgia