1. Department of Orthopedics, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, China
2. The Third Clinical Medical College, Fujian Medical University, Fuzhou, China
3. Division of Neurosurgery, Department of Surgery, Changhua Christian Hospital, Changhua, Taiwan
4. Department of Leisure Industry Management, National Chin-Yi University of Technology, Taichung, Taiwan
5. School of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
6. Department of Orthopedics, Zhangpu Country Hospital, Zhangzhou, China
7. Department of Neurosurgery, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, China.