Article History
Received: 4 August 2020
Revised: 11 September 2020
Accepted: 15 September 2020
First Online: 26 September 2020
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: This research protocol involving human participants and the protocol was approved by the Institutional Review Board (IRB)/Ethics Committee in Pusan National University hospital (approval number: 1802-024-074). This study complied with the principles of the Declaration of Helsinki.
: Informed consent was obtained from all individual participants included in the study.