Article History
Received: 15 October 2018
Accepted: 4 March 2019
First Online: 18 March 2019
Compliance with ethical standards
:
: No benefits in any form have been received or will be received from a commercial party related directly or indirectly to the subject of this article.
: This study was approved by the institutional review board of the Ajou University Hospital. (AJIRB-MED-MDB-16-476).
: Informed consent was waived because of the retrospective nature of the study and the analysis used anonymous clinical data.