1. Graduate School of Public Health, Seoul National University, Seoul, Korea.
2. Outpatient Rehabilitation Center, Korea Workers’ Compensation and Welfare Service Incheon Hospital, Incheon, Korea.
3. Department of Rehabilitation Medicine, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, Korea.
4. National Traffic Injury Rehabilitation Research Institute, National Traffic Injury Rehabilitation Hospital, Yangpyeong, Korea.
5. Institute of Health Policy and Management, Medical Research Center, Seoul National University, Seoul, Korea.