1. Division of Trauma, Department of Surgery, Chonnam National University Medical School and Hospital, Chonnam National University, Gwangju 61469, Republic of Korea
2. Department of Physical Medicine and Rehabilitation, Ansanhyo Hospital, Ansan-si 15457, Republic of Korea
3. Department of Trauma Surgery, Jeju Regional Trauma Center, Cheju Halla General Hospital, Jeju 63127, Republic of Korea