Kim, Joohyun
Yoon, Sumin
Baek, Sehyun
Article History
Received: 19 July 2020
Accepted: 4 January 2021
First Online: 12 January 2021
Ethics approval and consent to participate
: This study was approved by the Institutional Review Board of Korea University Guro Hospital.(IRB No.: 2018GR0359). Written informed consents were obtained from the patients. The study was conducted following the tenets of the Helsinki Declaration.
: Not applicable.
: The authors declare that they have no competing interests.