1. Department of Nursing Faculty of Nursing Gifu Kyoritsu University Ogaki Japan
2. Department of Gastroenterology and Hepatology Ogaki Municipal Hospital Ogaki Japan
3. Department of Gastroenterology and Hepatology Nagoya University Graduate School of Medicine Nagoya Japan
4. Department of Epidemiology Infectious Disease Control, and Prevention Hiroshima University Institute of Biomedical and Health Sciences Hiroshima Japan