Kim, Jieun
Hwang, In Sik
Shin, Saeam
Choi, Jong Rak
Lee, Seung-Tae
Funding for this research was provided by:
National Research Foundation of Korea (2015R1D1A1A01059210)
Article History
Received: 26 January 2018
Accepted: 1 April 2018
First Online: 12 April 2018
Compliance with ethical standards
: The study was approved by the Institutional Review Board (IRB) of Severance Hospital (approval no. 4-2016-0869) for the retrospective chart reviews and studies of existing preserved specimens all collected from subjects agreed and signed the informed consent.
: The authors declare that they have no conflict of interest.