1. Center for the Study of Hepatitis C, Division of Gastroenterology and Hepatology, Weill Cornell Medical College, New York, NY 10065, USA.
2. Center for the Study of Hepatitis C, Laboratory of Virology and Infectious Disease, The Rockefeller University, New York, NY 10065, USA.
3. Ragon Institute of MGH, MIT and Harvard, Cambridge, MA 02139, USA.
4. Department of Immunology and Microbial Science, The Scripps Research Institute, La Jolla, CA 92037, USA.
5. Department of Molecular Biology, Princeton University, Princeton, NJ 08544, USA.
6. Division of Gastroenterology and Hepatology, Mayo Clinic College of Medicine, Rochester, MN 55905, USA.
7. Department of Pathology, New York University Medical Center, New York, NY 10016, USA.
8. Division of Biology, California Institute of Technology, Pasadena, CA 91125, USA.