1. Department of Orthopaedic Surgery, Gunma University, Maebashi, Gunma, Japan
2. Kitasato University School of Nursing, Sagamihara, Japan
3. Department of Orthopaedic Surgery, The University of Tokyo, Tokyo, Japan
4. Department of Rehabilitation Medicine, The University of Tokyo, Tokyo, Japan
5. National Center for Global Health and Medicine, Tokyo, Japan
6. Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, Tokyo, Japan
7. Department of Pain and Palliative Medicine, The University of Tokyo Hospital, Tokyo, Japan
8. Saitama Medical University, Moroyama, Japan
9. JR Tokyo General Hospital, Tokyo, Japan
10. Saitama Medical Center, Jichi Medical University, Saitama, Japan
11. Nagoya University Hospital, Nagoya, Japan
12. Tokyo Metropolitan Bokutoh Hospital, Tokyo, Japan
13. Japanese Red Cross Saitama Hospital, Saitama, Japan
14. Tokyo Medical University, Tokyo, Japan
15. Wakayama Medical University Hospital, Wakayama, Japan
16. Kimitsu Chuo Hospital, Kisarazu, Japan
17. Chiba University Hospital, Chiba, Japan
18. Tonami General Hospital, Tonami, Japan
19. Kanto Rosai Hospital, Kawasaki, Japan
20. Tokai University Hospital, Isehara, Japan
21. Hokkaido Spinal Cord Injury Center, Bibai, Japan
22. Kagawa Prefectural Central Hospital, Takamatsu, Japan
23. Saitama Medical University Saitama Medical Center, Kawagoe, Japan
24. Jichi Medical University Hospital, Shimotsuke, Tochigi, Japan
25. Kansai Rosai Hospital, Amagasaki, Japan
26. Niigata City General Hospital, Niigata, Japan
27. Juntendo University Shizuoka Hospital, Izunokuni, Japan
28. Osaka Rosai Hospital, Sakai, Japan
29. Osaka University Hospital, Suita, Japan
30. Tokyo Medical and Dental University Hospital, Tokyo, Japan
31. Toyama University Hospital, Toyama, Japan
32. Spinal Injuries Center, Iizuka, Japan
33. Hirosaki University Hospital, Hirosaki, Japan
34. Chiba Aoba Municipal Hospital, Chiba, Japan
35. Tokyo Metropolitan Tama Medical Center, Tokyo, Japan
36. Nara Medical University Hospital, Kashihara, Japan
37. Nihon University Itabashi Hospital, Tokyo, Japan
38. Keio University Hospital, Tokyo, Japan
39. Imakiire General Hospital, Kagoshima, Japan
40. Hamamatsu University Hospital, Hamamatsu, Japan
41. Yokohama Rosai Hospital, Yokohama, Japan
42. Dokkyo Medical University Hospital, Mibu, Japan
43. Sendai Medical Center, Sendai, Japan
44. Kurashiki Central Hospital, Kurashiki, Okayama, Japan
45. Showa University Northern Yokohama Hospital, Yokohama, Japan
46. St Marianna University Hospital, Kawasaki, Japan
47. Kurume University Hospital, Kurume, Japan
48. Kyorin University Hospital, Tokyo, Japan
49. Kochi Health Sciences Center, Kochi, Japan