Song, Soo Youn
Yang, Jung Bo
Song, Min Soon
Oh, Hye Young
Lee, Geon Woo
Lee, Mina
Ko, Young Bok
Lee, Ki Hwan
Chang, Ha Kyun
Kwak, Sang Mi
Yoo, Heon Jong http://orcid.org/0000-0003-4808-3450
Article History
Received: 29 January 2019
Accepted: 31 May 2019
First Online: 6 June 2019
Compliance with ethical standards
:
: The authors have no financial disclosures to declare and no conflicts of interest to report.
: 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. Patient anonymity was completely preserved and the unique nature of identifying patients was not included in this manuscript.
: This study was based on retrospective review of published studies, it was not necessary to obtain informed consent from individual participants.