Kim, Young Jae
Lee, Seung Hyun
Lim, Kun Young
Kim, Kwang Gi
Article History
First Online: 29 January 2018
Compliance with Ethical Standards
: This retrospective study was approved by the Institutional Review Board (IRB) of National Cancer Center of Korea with waiver of the requirement for patients’ informed consent (NCC2014-0199).
: The authors declare that they have no conflict of interest.