Funding for this research was provided by:
Kaohsiung Veterans General Hospital (106-159, 106-D01-3, VGHKS 212347-23, 106-160, 106-084, 106-142, 105-139, 106-062, 106-156)
Ministry of Science and Technology, Taiwan (Most 105-2314-B-075B-007, Most 105-2314-B-075B-006)
Text and Data Mining valid from 2019-01-16
First Online: 16 January 2019
Compliance with Ethical Standards
: The open access fee was paid by the authors. This study was supported by grants from the Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan (Grant Numbers VGHKS 212347-23, 106-084, 106-142, 106-D01-3, 106-160, 106-156, 106-062, 105-139, and 106-159) and the Ministry of Science and Technology (Grant Numbers Most 105-2314-B-075B-006 and Most 105-2314-B-075B-007).
: All authors provided their consent for publication of this article.
: Data are available from the NHIRD, published by the Taiwan NHI Bureau. Due to legal restrictions imposed by the government of Taiwan in relation to the ‘Personal Information Protection Act’, data cannot be made publicly available. Requests for data access can be sent as a formal proposal to the NHIRD (ExternalRef removed).
: Mei-Tzu Wang, Hsin-Li Liang, Cheng Chung Hung, Pei-Ling Tang, Kun-Chang Lin, Cheng-Hung Chiang, Feng-You Kuo, Jin-Shiou Yang, Chun-Peng Liu, Guang-Yuan Mar, and Wei-Chun Huang declare that they have no potential conflicts of interest that might be relevant to the contents of this manuscript.
: This study was approved by the Institutional Review Board (IRB) of the Kaohsiung Veterans General Hospital (No. VGHKS14-CT7-07). Written informed consent was not required for this study as the NHI dataset consists of de-identified secondary data for research purposes, and the IRB of Kaohsiung Veterans General Hospital issued a formal written waiver of the requirement for informed consent.