Funding for this research was provided by:
Osaka Kidney Foundation (N/A)
Received: 19 July 2020
Accepted: 17 August 2020
First Online: 26 August 2020
Ethics approval and consent to participate
: The institutional ethics committee of Osaka University Graduate School of Medicine approved this study and waived the requirement for informed consent because all of the analyses used anonymous data (approval no. 16260).
: All authors have read the final manuscript and agreed for its publication in the present form.
: The authors declare that they have no competing interests.