1. Second Department of Internal Medicine; School of Medicine; Wakayama Medical University; Wakayama City Wakayama Japan
2. Department of Joint Disease Research; Graduate School of Medicine; The University of Tokyo; Bunkyo-ku Tokyo Japan
3. Department of Gastroenterology; Graduate School of Medicine; The University of Tokyo; Bunkyo-ku Tokyo Japan
4. Wakayama Wellness Foundation; Wakayama City Wakayama Japan
5. Department of Public Health; School of Medicine; Wakayama Medical University; Wakayama City Wakayama Japan
6. Division of Epigenomics; National Cancer Center Research Institute; Chuo-ku Tokyo Japan