Park, H.-Y.
Park, Y.-W.
Hwang, J.-W.
Do, S.-H.
Na, H.-S.
Article History
Received: 3 July 2019
Revised: 4 February 2020
Accepted: 22 February 2020
First Online: 9 March 2020
Compliance with ethical guidelines
:
: H.-Y. Park, Y.-W. Park, J.-W. Hwang, S.-H. Do and H.-S. Na declare that they have no competing interests. This research did not receive any specific grant from funding agencies in the public, commercial, or no-for-profit sectors.
: All procedures performed in studies involving human participants or on human tissue were in accordance with the ethical standards of the institutional and/or national research committee (Institutional Review Board of Seoul National University Bundang Hospital (B-1709/418-105)) and with the 1975 Helsinki declaration and its later amendments or comparable ethical standards. The requirement for informed consent was waived.