Funding for this research was provided by:
Text and Data Mining valid from 2018-10-22
Received: 8 May 2018
Accepted: 10 October 2018
First Online: 22 October 2018
Ethics approval and consent to participate
: All informed written consents were obtained when enrolling the patients. and the study was authorized by Seoul National University Bundang Hospital Institutional Review Board.
: Not applicable
: The authors declare that they have no competing interests.
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