1. Department of Emergency Medicine Soonchunhyang University Bucheon Hospital Bucheon Republic of Korea
2. Department of Orthopedics Korea University Hospital Ansan‐si Gyeonggi‐do Republic of Korea
3. Department of Orthopaedic Surgery Soonchunhyang University Bucheon Hospital Bucheon Republic of Korea
4. Department of Statistics and Actuarial Science Soongsil University Seoul Republic of Korea