1. National Institute of Allergy and Infectious Diseases National Institutes of Health, and the Emmes Company Rockville Maryland USA
2. Montana State University Bozeman Montana USA
3. University of Washington Seattle Washington USA
4. Epidemiologic Research and Information Center, Veterans Affairs Puget Sound Health Care System Seattle Washington USA
5. Fred Hutchinson Cancer Research Center Seattle Washington USA
6. Institut de Recherche pour le Développement Niakhar Senegal
7. PATH Seattle Washington USA
8. University of Maryland School of Medicine, Center for Vaccine Development and Global Health Baltimore Maryland USA
9. Department of Biostatistics and Fred Hutchinson Cancer Research Center University of Washington Seattle Washington USA