Funding for this research was provided by:
Kaohsiung Chang Gung Memorial Hospital (CMRPG8H1301, CMRPG8H0261 and CMRPG8J0691)
Received: 14 August 2019
Accepted: 30 April 2020
First Online: 25 May 2020
Ethics approval and consent to participate
: The project was ethically approved by the Ethics Committee of Kaohsiung Chang Gung Memorial Hospital.
: Not applicable.
: The authors declare no conflict of interest.