1. Department of Family Medicine, Konkuk University School of Medicine, Seoul, Korea
2. National Hospice Center, National Cancer Center, Goyang, Korea
3. Department of Family Medicine, International St. Mary’s Hospital College of Medicine, Catholic Kwandong University, Incheon, Korea
4. Department of Family Medicine, Korea University Guro Hospital, Seoul, Korea
5. Maumtodac Psychiatric Clinic, Ansan, Korea
6. Department of Internal Medicine, Seoul Paik Hospital, Inje University, Seoul, Korea
7. Department of Internal Medicine, Ewha Womans University College of Medicine, Seoul, Korea
8. Hospice & Palliative Care Unit, The Catholic University of Korea, Seoul St. Mary’s Hospital, Seoul, Korea
9. Department of Family Medicine, VHS Medical Center, Seoul, Korea
10. Department of Anesthesiology and Pain Medicine, Seoul National University School of Medicine, Seoul, Korea
11. Department of Family Medicine, Chungbuk National University College of Medicine, Cheongju, Korea
12. Department of Internal Medicine, Gyeongsang National University College of Medicine, Jinju, Korea
13. Department of Family Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Korea
14. Department of Family Medicine, Korea University, College of Medicine, Seoul, Korea
15. Department of Psychiatry, Chonnam National University Medical School, Gwangju, Korea
16. Hospice & Palliative Care Center, Korea University Guro Hospital, Seoul, Korea
17. Department of Hematology and Oncology, Ulsan University College of Medicine, Ulsan University Hospital, Ulsan, Korea
18. Department of Family Medicine, Chungbuk National University Hospital, Cheongju, Korea
19. Department of Internal Medicine, Anyang Sam Hospital, Anyang, Korea
20. Department of Family Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea