1. Department of Neurosurgery, Taipei Medical University Hospital, Taipei, Taiwan.
2. School of Medicine, Taipei Medical University, Taipei, Taiwan.
3. Graduate Institute of Injury Prevention and Control, Taipei Medical University, Taipei, Taiwan.
4. School of Public Health, Taipei Medical University, Taipei, Taiwan.
5. Biostatistics and Research Consultation Center, Taipei Medical University, Taipei, Taiwan.
6. School of Nutrition and Health Sciences, Taipei Medical University, Taipei, Taiwan.
7. Department of Neurosurgery, Taipei Medical University-Shuang Ho Hospital, Taipei, Taiwan.
8. Department of Neurosurgery, Taipei Medical University-Wan Fang Hospital, Taipei, Taiwan.
9. School of Public Health, Curtin University, Perth, Australia.
10. Graduate Institute of Medical Sciences, Taipei Medical University, Taipei, Taiwan.