Funding for this research was provided by:
Sekisui Medical Co., Ltd. (Ibaraki, Japan).
Received: 25 July 2020
Accepted: 3 November 2020
First Online: 17 November 2020
Ethics approval and consent to participate
: Written informed consent about research use of samples was obtained from all participants from Yamanashi University Hospital. All procedures performed in the study involving human subjects were in accordance with the ethical standards of the institutional research committee and with the 1964 declaration of Helsinki and its later amendments or comparable ethical standards.
: Not applicable.
: Sekisui Medical Co., Ltd. (Ibaraki, Japan) provided support for the work in the current study and could be influenced by a secondary interest such as future financial gain.