1. Johns Hopkins University, Baltimore, Maryland
2. University of New Mexico, Albuquerque, New Mexico
3. The University of New Mexico, Albuquerque, New Mexico
4. The University of California, San Francisco, San Francicso, California
5. GlaxoSmithKline Vaccines, Wavre, Brussels Hoofdstedelijk Gewest, Belgium
6. ReiThera, srl, Rome, Piemonte, Italy
7. The National Institute of Allergy and Infectious Diseases, Rockville, Maryland
8. The National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, Maryland
9. The Emmes Company, Rockville, Maryland