Funding for this research was provided by:
National Research Foundation of Korea (2017R1A2B4011450)
Article History
Received: 4 January 2019
Accepted: 2 December 2019
First Online: 16 December 2019
Ethics approval and consent to participate
: This study complied with the tenets of the Declaration of Helsinki. This study received ethical approval from the Institutional Review Board of the Seoul National University Bundang Hospital.
: Written informed consent was obtained from the patients for publication and any accompanying images. A copy of the written consent is available for review by the Editor of this journal.
: The authors declare that they have no competing interests.