Ohsawa, Takashi
Kimura, Masashi
Chikuda, Hirotaka
Article History
Received: 2 February 2020
Accepted: 11 June 2020
First Online: 27 June 2020
Compliance with ethical standards
:
: We declare that we have no conflicts of interest in the authorship or publication of this contribution.
: The present study was ethically approved by the institutional review board of the hospital where the study was performed (approval number was 18060601).
: Informed consent was obtained in the form of opt-out.