1. Section of Neurosurgery, Department of Surgery, National Cheng Kung University Hospital; College of Medicine, National Cheng Kung University, Tainan, Taiwan
2. Department of Orthopedics, Shuang Ho Hospital, Taipei Medical University, Taipei, Taiwan; Taiwan Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
3. Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
4. Department of Cell Biology and Anatomy, College of Medicine, National Cheng Kung University, Tainan, Taiwan