1. Department of Emergency Medicine, Samsung Changwon Hospital, Sungkyunkwan University School of Medicine, Changwon, Korea.
2. Department of Emergency Medicine, Inje University, Busan Paik Hospital, Busan, Korea.
3. Department of Physical Education, Kyungnam University, Changwon, Korea.
4. Department of Emergency Medicine, Hallym University Sacred Heart Hospital, Hallym University, Anyang, Korea.
5. Department of Emergency Medicine, Gachon University Gil Hospital, Incheon, Korea.