Funding for this research was provided by:
Dong-A University (2020-11)
Received: 7 August 2020
Accepted: 16 December 2020
First Online: 6 January 2021
Ethics approval and consent to participate
: The study protocol was approved by the institutional review board of our center (IRB No. 20–073).
: Not applicable.
: The authors declare that they have no competing interests.