Funding for this research was provided by:
Chang Gung Memorial Hospital (CMRPG8C1051, CMRPG8C1291 and CMRPG8E1351)
Received: 20 May 2019
Accepted: 23 January 2020
First Online: 31 January 2020
Ethics approval and consent to participate
: This study was approval by the Institutional Review Board and conducted at Chang Gung Memorial Hospital following. We carried out all procedures in this study pursuant to the ethical standards of the institutional and/or national research committee, as well as the Helsinki declaration and its subsequent amendments or comparable ethical standards. Furthermore, we obtained the written informed consent from all participants.
: Not applicable.
: The authors declare that they have no competing interests.