1. Department of Orthopedics, The First Affiliated Hospital of Xiamen University, Xiamen, China
2. Division of Neurosurgery, Department of Surgery, Changhua Christian Hospital, Changhua, Taiwan
3. Institute of Biochemistry, Microbiology and Immunology, Chung Shan Medical University, Taichung, Taiwan
4. Department of Veterinary Medicine, National Chung Hsing University, Taiwan
5. Department of Anatomy, Faculty of Medicine, Chung Shan Medical University, Taichung, Taiwan
6. College of Nursing and Health Sciences, Dayeh University, Changhua, Taiwan
7. School of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan