Kim, Young-Hoo
Park, Jang-Won
Jang, Young-Soo
Article History
Received: 22 June 2020
Accepted: 14 December 2020
First Online: 12 January 2021
Ethics approval and consent to participate
: This retrospective study was conducted after approval from the institutional review board in the authors’ affiliated institution from April 2017 to December 2017. Ethical clearance was obtained from the ethical committee and approval was obtained from the institutional review board. Consent was taken from all the patients prior to inclusion into the study.
: I would like to confirm that the content of this manuscript has not been published elsewhere or submitted simultaneously for publication elsewhere. The manuscript has been submitted and there are no special or specific issue in the publication. All the authors give our full consent for the publication of this manuscript in the journal.
: I would like to declare that there have been no conflicts or competing interests during the study and no issues in the journal policies. All the authors have agreed to the submission of the manuscript.