Park, Hwa Yeon
Kim, Mi Jin
Kim, Ju Young http://orcid.org/0000-0001-6018-3337
Kim, Sarah
Choi, Ji Young
Kim, Jeong Hyun
Jeong, Hee Yeong
Article History
First Online: 8 August 2018
Compliance with Ethical Standards
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. This study was approved by the <i>Institutional Review Board</i> at Seoul National University Bundang Hospital (IRB approval number B1402/239–002).
: The authors declare that they have no conflict of interest.