1. Department of Preventive Medicine, Eulji University School of Medicine, Daejeon, Korea.
2. Department of Healthcare Management, Graduate School of Public Health, Yonsei University, Seoul, Korea.
3. Department of Orthopaedic Surgery, Daejeon Eulji Medical Center, Eulji University School of Medicine, Daejeon, Korea.
4. Healthcare Review and Assessment Committee, Health Insurance Review & Assessment Service, Wonju, Korea.
5. Quality Assessment Department, Health Insurance Review & Assessment Service, Wonju, Korea.