Nagahama, Hiroshi http://orcid.org/0000-0002-2310-2216
Wanibuchi, Masahiko
Hirano, Toru
Nakanishi, Mitsuhiro
Takashima, Hiroyuki
Article History
Received: 29 April 2020
Accepted: 23 July 2020
First Online: 29 July 2020
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the institutional review board of Sapporo Medical University and with the 1964 Helsinki declaration and its later amendments.
: Informed consent was obtained from all individual participants included in the study.