Author Contributions: Dr Chiu had full access to all of the data in the study and takes responsibility for the integrity of the data and the accuracy of the data analysis.
Study concept and design: Chiu, Chiang.
Acquisition of data: Chu, Chang, Lui,
Analysis and interpretation of data: Chiu, Chiang.
Drafting of the manuscript: Chiu,
Critical revision of the manuscript for important intellectual content: Chu, Chang, Lui, Chiang.
Statistical analysis: Chiu, Chu, Lui, Chiang.
Obtained funding: Chiu, Chu, Chang, Lui, Chiang.
Administrative, technical, or material support: Chu, Chang, Chiang.
Study supervision: Chiang.
Conflict of Interest Disclosures: All authors have completed and submitted the ICMJE Form for Disclosure of Potential Conflicts of Interest and none were reported.
Funding/Support: The study was supported by the Injury Prevention and Disaster Medicine Research Foundation, the Taiwan Department of Health (DOH100-TD-B-111-003), the National Health Research Institute (NHRI-EX100-9707PI), and the National Science Council (NSC98-2321-B-038-003-MY3, NSC98-2314-B-038-012-MY3, NSC 98-2911-I-038 -003).
Role of the Sponsors: The Injury Prevention and Disaster Medicine Research Foundation was involved in the preparation, review, and approval of the manuscript; the Taiwan Department of Health assisted with the collection, management, analysis, and interpretation of the data; and the National Health Research Institute and National Science Council supported the design and conduct of the study.
Additional Contributions: We thank Ching-Chang Hung, MD, Department of Neurosurgery, National Taiwan University Hospital, for assistance in manuscript preparation without receiving any compensation, and the directors and staff of all major hospitals who gave full support and provided complete and invaluable data.