Funding for this research was provided by:
Chosun University (2014)
Text and Data Mining valid from 2019-03-25
Received: 7 July 2018
Accepted: 13 March 2019
First Online: 25 March 2019
Ethics approval and consent to participate
: This study was approved in August of 2016 by the Institutional Review Board (IRB number 2016–07-014) of Chosun University as a retrospective study. In the conduct of this study, compliance to good clinical practice as defined by the Helsinki Declaration was observed.
: Not applicable.
: The authors declare that they have no competing interests.
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