1. National Institute of Allergy and Infectious Diseases, Vaccine Research Center, Bethesda, Maryland
2. Institut National de Recherche Biomedicale, Kinshasa, Democratic Republic of the Congo
3. UCLA Fielding School of Public Health, Los Angeles, California
4. Kinshasa School of Public Health
5. Division de la Lutte Contre les Maladies, Ministere de la Santé, Kinshasa, Democratic Republic of the Congo
6. Biotechnology Core Laboratory, National Institute of Diabetes and Digestive and Kidney Disease, Bethesda, Maryland
7. National Institute of Child Health and Human Development, Bethesda, Maryland