1. Department of Psychosomatic Medicine Faculty of Medicine Kindai University Osakasayama Japan
2. Department of Internal Medicine Itami Seifu Houpital Itami Japan
3. Department of Psychosomatic Internal Medicine a Palliative Care Medicine Sakai City Medical Center Sakai Japan
4. Department of Internal Medicine Kyoto Min‐Iren Asukai Hospital Kyoto Japan
5. Systematic Review Workshop Peer Support Group (SRWS‐PSG) Osaka Japan
6. Section of Clinical Epidemiology Department of Community Medicine Kyoto University Graduate School of Medicine Kyoto Japan
7. Department of Healthcare Epidemiology Graduate School of Medicine and Public Health Kyoto University Kyoto Japan
8. Department of Psychosomatic Internal Medicine National Hospital Organisation Kinki‐Chuo Chest Medical Center Sakai Japan
9. Department of Psychosomatic Medicine Graduate School of Medical Sciences Kyushu University Fukuoka Japan
10. Department of Psychosomatic Medicine International University of Health and Welfare Narita Hospital Chiba Japan
11. Department of Psychosomatic Medicine Kansai Medical University Hospital Hirakata Japan
12. Department of Psych‐oncology National Cancer Center Hospital Tokyo Japan
13. Department of Stress Sciences and Psychosomatic Medicine Graduate School of Medicine The University of Tokyo Tokyo Japan