Lee, Chang-Hee
Son, Seung Hyun
Hong, Chae Moon
Jeong, Ju Hye
Jeong, Shin Young
Lee, Sang-Woo
Lee, Jaetae
Kwon, Tae-Geon
Ahn, Byeong-Cheol http://orcid.org/0000-0001-7700-3929
Article History
Received: 23 February 2018
Revised: 5 June 2018
Accepted: 29 June 2018
First Online: 16 July 2018
Compliance with Ethical Standards
:
: Seung Hyun Son, Chae Moon Hong, Ju Hye Jeong, Shin Young Jeong, Sang-Woo Lee, Jaetae Lee, Tae-Geon Kwon, and Byeong-Cheol Ahn declare that they have no conflict of interest.
: The study protocol had been approved by the Ethics Committee of the Kyungpook National University Hospital (KNUH 2018–02-029). All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki declaration and its later amendments. No informed consent was needed, because of the retrospective design of our study.
: The institutional review board of our institute approved this retrospective study, and the requirement to obtain informed consent was waived.