Ham, Ahrong
Kim, Min Hwan
Kim, Gun Min
Kim, Jee Hung
Kim, Jee Ye
Park, Hyung Seok
Park, Seho
Cho, Young Up
Park, Byeong Woo
Kim, Seung Il
Sohn, Joohyuk http://orcid.org/0000-0002-2303-2764
Funding for this research was provided by:
Ministry of Health and Welfare (HI19C0430)
Article History
Received: 23 April 2020
Accepted: 13 June 2020
First Online: 23 June 2020
Change Date: 14 July 2020
Change Type: Correction
Change Details: In the original publication of the article, under the Results section, subheading ���Patient survival���, the second sentence that reads as ���The 6-month PFS was 92.4%, 81.8%, and 93.3% and the one-year PFS was 72.0%, 88.9%, and 78.9% in Groups 1���3, respectively.��� should read as "The 6-month PFS was 82.8%, 75.0%, and 68.0% and the one-year PFS was 77.0%, 62.0%, and 63.8% in Groups 1���3, respectively.".
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: This study was approved by the Institutional Review Board of Severance Hospital. All procedures performed in this study were in accordance with the ethical standards of the Institutional Review Board and with the 1964 Helsinki declaration.
: Informed consent was waived because this study is a retrospective medical chart review that has minimal level of risk.