1. Department of Preventive Medicine, Eulji University College of Medicine, Daejeon, Korea
2. Department of Orthopaedic Surgery, Daejeon Eulji Medical Center, Eulji University School of Medicine, Daejeon, Korea
3. Department of Healthcare Management, Graduate School of Public Health, Yonsei University, Seoul, 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