1. Basic Research Program, SAIC Frederick, National Cancer Institute-Frederick Cancer Research and Development Center
2. Institute of Microbiology, University of Lausanne, Lausanne
3. Inherited Disease Research Branch, National Human Genome Research Institute
4. Department of Social Medicine, University of Bristol, Bristol, United Kingdom
5. Department of Genetics and Microbiology, University of Geneva
6. Division of Infectious Diseases, University Hospital of Geneva, Geneva, Switzerland
7. Johns Hopkins University Bloomberg School of Public Health, Baltimore
8. Rho Inc., Chapel Hill, North Carolina
9. Viral Epidemiology Branch, National Cancer Institute, Bethesda, Maryland
10. Fineberg School of Medicine, Northwestern University, Comprehensive AIDS Center, Chicago, Illinois
11. San Francisco Department of Public Health, San Francisco, California
12. Laboratory of Genomic Diversity, National Cancer Institute, Frederick