1. Department of Gastroenterology and HepatologyOgaki Municipal Hospital Ogaki Japan
2. Department of Epidemiology, Infectious Disease Control, and PreventionHiroshima University Institute of Biomedical and Health Sciences Hiroshima Japan
3. Department of Internal Medicine, Himeji Red Cross Hospital Himeji Japan
4. Faculty of NursingGifu Kyoritsu University Ogaki Japan