1. Nishiarita Kyoritsu Hospital, Saga-Ken
2. Hokkaido Prefectural Haboro Hospital
3. Yamakuni-machi Tsukinoki Clinic, Oita-Ken
4. Division of Gastroenterology
5. Division of Pulmonary Medicine
6. Department of Animal Breeding and Reproduction, Faculty of Agriculture, Utsunomiya University, Tochigi-Ken, Japan
7. Department of Internal Medicine, Kin-ikyo Chuo Hospital, Hokkaido
8. Department of Medicine, and Division of Virology, Department of Infection and Immunity, Jichi Medical School