Received: 6 July 2020
Accepted: 26 November 2020
First Online: 7 December 2020
Ethics approval and consent to participate
: The design and protocol of this retrospective study were approved by the Institutional Review Board of Chonbuk National University Hospital (IRB No. 2020–01-020). Written informed consent was obtained from all indivisual patients included in the study.
: Written informed consent was obtained from the patients for publication of their clinical datails and clinical images.
: The authors declare that they have no competing interests.