Jang, Eun-A
Yoo, Kyung Yeon
Lee, Seongheon
Song, Seung Won
Jung, Eugene
Kim, Joungmin
Bae, Hong-Beom
Article History
Received: 18 March 2021
Accepted: 30 June 2021
First Online: 31 July 2021
Declarations
:
: This retrospective study protocol was approved (approval no.: CNUHH-2019–021) by the Institutional Review Board of Chonnam National University Hwasun Hospital (322, Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeollanam-do, Republic of Korea), and was registered at the Clinical Research Information Service of the Korea National Institute of Health (trial no.: KCT0003640, 19/03/2019), which belongs to the World Health Organization Registry Network. The study protocol was performed in accordance with the Declaration of Helsinki and laws and regulations of the countries in which the clinical study was conducted, including data protection laws, the Clinical Investigation Agreement and the Clinical Investigation Plan. The requirement for written informed consent was waived by the review board because of the retrospective study design and lack of risk to patients.
: Not applicable.
: The authors declare that they have no competing interests.