1. Department of Gastroenterology and HepatologyTokyo Medical and Dental University Tokyo Japan
2. Department of Clinical LaboratoryMedical Hospital of Tokyo Medical and Dental University Tokyo Japan
3. Department of Liver Disease ControlTokyo Medical and Dental University Tokyo Japan
4. Genome Medical Sciences ProjectNational Center for Global Health and Medicine Ichikawa Japan
5. Department of Gastroenterology, Graduate School of Medical SciencesInternational University of Health and Welfare Nasushiobara Japan