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Article History

Received: 30 July 2020

Revised: 25 January 2021

Accepted: 2 March 2021

First Online: 29 April 2021

Declarations

:

: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional review board (Yeungnam University Hospital IRB, Daegu, South Korea; Dong-A University Hospital IRB, Busan, South Korea; Chungnam National University Hospital IRB, Daejeon, South Korea; Maryknoll General Hospital IRB, Busan, South Korea; Chonnam National University Hospital IRB, Gwangju, South Korea), and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

: Informed consent was obtained from all individual participants included in the study.

: Author D.P. authors certify that they have no affiliations with or involvement in any organization or entity with any financial interest, or non-financial interest in the subject matter or materials discussed in this manuscript. Author W.J. received a research grant from Bayer. Author J.P. received a research grant from Bayer. Author J.K. received a research grant from Bayer. Author Y.J. received a research grant from Bayer. Author M.S. received a research grant from Bayer, Novartis, and Allergan.