Received: 20 November 2019
Accepted: 20 August 2020
First Online: 26 August 2020
Ethics approval and consent to participate
: The study protocol was approved by the Ethics Committee of The Jikei University Hospital (approval number: 30–295 9316). All individual participants were provided a means to opt out of the study.
: Not applicable.
: Y.M. and M.I. received scholarship funds from Baxter International, Inc. and Terumo Corporation. Y.T. received research grants from Baxter Healthcare Corporation, Inc. No sources of funding had any direct involvement in the design or conduct of the study; collection, management, analysis, or interpretation of the data; or the preparation, review, or approval of the manuscript. No other authors have any conflicts of interest to declare.