Funding for this research was provided by:
Chiayi Chang Gung Memorial Hospital (CGRPF6G0012, CMRPF6I0011)
Text and Data Mining valid from 2020-01-04
Received: 19 March 2019
Accepted: 27 December 2019
First Online: 4 January 2020
Compliance with ethical standards
: This study was approved by the Institutional Review Board (IRB) of Chang Gung Medical Foundation (201701930B0, 201700448B0).