Ahn, Beung-Chul
Pyo, Kyoung-Ho
Xin, Chun-Feng
Jung, Dongmin
Shim, Hyo Sup
Lee, Chang Young
Park, Seong Yong
Yoon, Hong In
Hong, Min Hee
Cho, Byoung Chul
Kim, Hye Ryun
Funding for this research was provided by:
National Research Foundation of Republic of Korea (2017R1D1A1B03029874, 2017M3A9E8029717, 2017M3A9E9072669, 2016M3C9A4922809)
Article History
Received: 25 December 2018
Accepted: 18 March 2019
First Online: 25 March 2019
Compliance with ethical standards
:
: The authors declare no potential conflicts of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional review board of Severance Hospital and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Informed consent was waived due to the retrospective nature of this study, approved by the institutional review board (IRB no. 4-2016-0678).