Received: 30 August 2020
Accepted: 26 November 2020
First Online: 8 January 2021
Ethics approval and consent to participate
: Approved by the Research Ethics Committee of the University of Tokyo (2018167 N1).
: Not applicable.
: T. Takura reports grants from Nihon Medi-Physics Co., Ltd.; Terumo Corporation; and Fujifilm Toyama Chemical Co., Ltd., outside the submitted work.The other authors declare that they have no competing interests.