Funding for this research was provided by:
This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education. (NRF-2015R1D1A3A01018104)
Article History
Received: 30 January 2018
Accepted: 4 March 2018
First Online: 22 March 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. All procedures were conducted using protocols approved by the ethics committee of Soonchunhyang University Bucheon Hospital.
: Informed consent was obtained from all individual participants included in the study.