Received: 4 May 2020
Accepted: 6 August 2020
First Online: 29 September 2020
Ethics approval and consent to participate
: This study was conducted in accordance with the principles outlined in the Declaration of Helsinki and was approved by the institutional review board (Himchan IRB 169684-01-201906-04); furthermore, written informed consent was obtained from all patients.
: Not applicable.
: The authors declare that they have no competing interests.