1. Department of Medicine, New York University School of Medicine
2. Department of Medicine
3. First Department of Internal Medicine, Nagoya University School of Medicine, Nagoya, Japan
4. Department of Microbiology and Immunology, Vanderbilt University School of Medicine, Nashville, Tennessee
5. Department of Medical Microbiology, Academic Medical Center, University of Amsterdam, Amsterdam
6. Department of Gastroenterology and Hepatology, University Hospital Dijkzigt, Rotterdam, The Netherlands
7. Department of Veterans Affairs Medical Center, New York, New York