1. Division of Rheumatology, Allergy and Clinical Immunology, University of California at Davis, Davis, CA, USA
2. Department of Gastroenterology and Metabolism, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
3. Third Department of Internal Medicine, Division of Gastroenterology and Hepatology, Kansai Medical University, Osaka, Japan
4. Department of Diagnostic Pathology, Graduate School of Medicine and Pharmaceutical Science for Research, University of Toyama, Toyama, Japan
5. Department of Microbiology, Monash University, Melbourne, Vic, Australia
6. Department of Pathology, Emory University School of Medicine, Atlanta, GA, USA
7. Institute of Immunology and School of Life Sciences, University of Science and Technology of China, Hefei, China
8. Division of Immunology, Allergy and Rheumatology, University of Cincinnati College of Medicine, Cincinnati, OH, USA