1. Department of Rehabilitation Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
2. Department of Rehabilitation Medicine, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
3. Swiss Paraplegic Research, Nottwil, Switzerland
4. Sirindhorn National Medical Rehabilitation Institute, Department of Medical Services, Ministry of Public Health, Nonthaburi, Thailand
5. Sunpasitthiprasong Hospital, Ministry of Public Health, Ubon Ratchathani, Thailand
6. Ratchaburi Hospital, Ministry of Public Health, Ratchaburi, Thailand
7. Nakornping Hospital, Ministry of Public Health, Chiang Mai, Thailand
8. Phayao Hospital, Ministry of Public Health, Phayao, Thailand
9. Surin Hospital, Ministry of Public Health, Surin, Thailand
10. Thabo Crown Prince Hospital, Ministry of Public Health, Nong Khai, Thailand
11. Somdech Phra Nangchao Sirikit Hospital, Naval Medical Department, Royal Thai Navy, Chonburi, Thailand
12. Maharaj Nakhon Si Thammarat Hospital, Ministry of Public Health, Nakhon Si Thammarat, Thailand
13. Burapha University Hospital, Faculty of Medicine, Burapha University, Chonburi, Thailand
14. Department of Rehabilitation Medicine, Faculty of Medicine, Prince of Songkla University, Songkhla, Thailand