Funding for this research was provided by:
Chang Gung Memorial Hospital (CORPG3C0171~3C0172, CZRPG3C0053, CORPG3G0021, CORPG3G0022)
Received: 16 July 2019
Accepted: 30 September 2019
First Online: 11 October 2019
Ethics approval and consent to participate
: The study was approved by Chang-Gung Medical Foundation Institutional Review Board (102-2304B), and written informed consent was given by all the participants before enrollment.
: Not applicable.
: The authors declare that they have no competing interests.