Funding for this research was provided by:
Boryung Pharmaceutical Co (1420270)
Received: 30 December 2019
Accepted: 18 March 2020
First Online: 7 April 2020
Ethics approval and consent to participate
: All participating authors follow Good Clinical Practice, and the study is being conducted according to the principles of the Declaration of Helsinki. The study protocol was reviewed and approved by the Institutional Review Boards of Severance Hospital, Korea University Anam Hospital, Asan Medical Center, Gachon University Gil Medical Center, and Seoul National University (IRB 4–2014-0239). All patients enrolled provided written informed consent.
: Not applicable.
: The authors declare no competing interests.