Received: 7 January 2019
Accepted: 22 May 2019
First Online: 3 June 2019
Change Date: 6 August 2019
Change Type: Correction
Change Details: An error occurred during the publication of a number of articles in <i>Renal Replacement Therapy</i>. Several articles were published in volume 5 with a duplicate citation number.
Ethics approval and consent to participate
: This study was approved by the research ethics committee of Sekikawa Hospital (Approved No. H2705) and was conducted under the Declaration of Helsinki.
: Not applicable.
: The authors declare that they have no competing interests.