Funding for this research was provided by:
Kaohsiung Veterans General Hospital (VGHKS106-118, VGHKS106-174 and VGHKS107-171)
Text and Data Mining valid from 2018-04-16
Received: 30 November 2017
Accepted: 8 March 2018
First Online: 16 April 2018
Ethics approval and consent to participate
: This study was approved by the institutional review board (IRB) of Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan (IRB number: VGHKS13-CT10-10).
: Not applicable.
: The authors declare that they have no competing interests.
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