1. Department of Microbiology and Immunology, Drexel Institute for Biotechnology and Virology Research, Drexel University College of Medicine, Doylestown, PA, USA
2. Immunotope, Inc., Doylestown, PA, USA
3. Division of Gastroenterology, University of Michigan, Ann Arbor, MI, USA
4. Division of Clinical Hepatology, Department of Clinical Medicine and Center for Hepatobiliary Disease and Abdominal Transplantation, UCSD Medical Center, San Diego, CA, USA