Kim, Jung Sun
Kang, Eun Joo https://orcid.org/0000-0003-0702-3400
Kim, Dae Sik
Choi, Yoon Ji
Lee, Suk Young
Kim, Hong Jun
Seo, Hee Yeon
Kim, Jun Suk
Article History
Received: 11 June 2018
Accepted: 29 November 2018
First Online: 17 December 2018
Ethics approval and consent to participate
: This study complies with the ethical standards in Korea. This study was approved by the Institutional Review Board of the Korea University Guro Hospital (KUGH 16320–001). This study was designed as retrospective study using electronic medical records of patients. Because objectives and materials of study did not affect the patient’s health and welfare, the institutional review board of our institution permitted to perform this study without patient’s consent.
: Not applicable.
: The authors declare that they have no conflicts of interest relevant to the contents of this manuscript.
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