Article History
Received: 27 March 2020
Accepted: 7 May 2020
First Online: 21 May 2020
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interests.
: This restrospective study was approved by the Institutional Review Board (IRB) of Hanyang University Hospital, Seoul, Korea, and all research conducted adhered to the tenets of the Declaration of Helsinki (IRB No. 2018–09-021).