Funding for this research was provided by:
Changhua Christian Hospital (106-CCH-IRP-021)
Text and Data Mining valid from 2019-02-19
Received: 17 July 2018
Accepted: 31 January 2019
First Online: 19 February 2019
Ethics approval and consent to participate
: This study was conducted in compliance with the principles of the Declaration of Helsinki, and the protocol was approved by the Ethics Committee of Changhua Christian Hospital, Changhua City, Taiwan (CCH IRB No: 150408). The ethics committee waived the need for informed consent specifically.
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.