1. Department of Molecular Medicine, The Scripps Research Institute, La Jolla, California 92037, United States
2. Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, California 92037, United States
3. IAVI Neutralizing Antibody Center, The Scripps Research Institute, La Jolla, California 92037, United States
4. The Ragon Institute of Massachusetts General Hospital, Massachusetts Institute of Technology and Harvard, Cambridge, Massachusetts 02139, United States