Funding for this research was provided by:
Japan Society for the Promotion of Science (19K18720)
Received: 28 February 2020
Accepted: 5 May 2020
First Online: 2 June 2020
Ethics approval and consent to participate
: This study was performed in accordance with the Helsinki Declaration and approved by the Institutional Review Board of Tohoku University Hospital (Number 2014–1-274).
: All patients provided written, informed consent for publication.
: The authors declare that they have no competing interests.