1. Department of Critical and Emergency Medicine, Wan Fang Hospital, Taipei Medical University, Taipei 116, Taiwan
2. Graduate Institute of Injury Prevention and Control, College of Public Health and Nutrition, Taipei Medical University, No. 250, Wu-Hsing Street, Taipei 110, Taiwan
3. School of Public Health, College of Public Health and Nutrition, Taipei Medical University, Taipei 110, Taiwan
4. Department of Neurosurgery, Shuang Ho Hospital, Taipei Medical University, Taipei 235, Taiwan
5. Department of Emergency Medicine, College of Medicine and Shuang Ho Hospital, Taipei Medical University, Taipei 110, Taiwan
6. Department of Public Health, College of Medicine, Taipei Medical University, Taipei 110, Taiwan
7. Department of Neurosurgery, Wan Fang Hospital, Taipei Medical University, Taipei 116, Taiwan