1. Department of Clinical Laboratory Medicine, Nagoya City University Hospital
2. Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka
3. Third Department of Internal Medicine, Nara Medical University, Kashihara
4. Department of Gastroenterology, Aichi Medical University School of Medicine, Nagakute
5. Department of Gastroenterology and Metabolism, Nagoya City University Graduate School of Medical Sciences
6. Department of Virology and Liver Unit, Nagoya City University Graduate School of Medical Sciences, Japan