1. Department of Epidemiology and Health Promotion, Institute for Health Promotion, Graduate School of Public Health, Yonsei University, Seoul, Korea
2. Health Insurance Policy Research Institute, National Health Insurance Service, Wonju, Korea
3. Department of Preventive Medicine, Yonsei University College of Medicine, Seoul, Korea
4. Department of Rehabilitation Medicine, Seoul National University Hospital, Seoul, Korea
5. National Traffic Injury Rehabilitation Research Institute, National Traffic Injury Rehabilitation Hospital, Yangpyeong, Korea
6. Department of Public Health, Graduate School, Yonsei University, Seoul, Korea
7. Department of Public Health, Graduate School, Ajou University, Suwon, Korea