Ha, Yun-Sok
Kim, Sang Won
Chun, So Young
Chung, Jae-Wook
Choi, Seock Hwan
Lee, Jun Nyung
Kim, Bum Soo
Kim, Hyun Tae
Yoo, Eun Sang
Kwon, Tae Gyun
Kim, Won Tae
Kim, Wun-Jae
Kim, Tae-Hwan
Funding for this research was provided by:
National Research Foundation of Korea (2016R1C1B1011180, 2015R1C1A1A01053509, 2014M3A9D3034164)
Ministry of Education (2015R1D1A3A03020378)
Ministry of Trade, Industry and Energy (R0005886)
Article History
Received: 22 March 2017
Accepted: 15 January 2019
First Online: 24 January 2019
Ethics approval and consent to participate
: This study was approved by the Ethics Committee of the Kyungpook National University Hospital (approval number: KNUMC 2016–05-021). This study was performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments. This retrospective study was performed after approval from the institutional review board. Our ethics board waived the need for informed consent for this retrospective study.
: Not applicable.
: The authors declare that they have no competing interest.
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