Article History
Received: 20 October 2020
Accepted: 27 December 2020
First Online: 7 January 2021
Compliance with ethical standards
:
: Daisuke Fujimoto, Keizo Taniguchi, and Hirotoshi Kobayashi have no conflict of interest or financial ties to disclose.
: All procedures performed in this study were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Declaration of Helsinki and its later amendments or comparable ethical standards. Ethics approval was obtained from the institutional review board of Teikyo University (No. 19-1312).
: Not applicable.
: Informed consent was obtained prior to recruitment from all individual participants included in this study.
: The datasets generated and/or analyzed during the current study are not publicly available because the data are confidential patient data but are available from the corresponding author on reasonable request.