Noji, Takehiro
Nagayama, Minoru
Imai, Koji
Kawamoto, Yasuyuki
Kuwatani, Masaki
Imamura, Masafumi
Okamura, Keikuke
Kimura, Yastoshi
Hirano, Satoshi
Article History
Received: 24 September 2019
Accepted: 23 April 2020
First Online: 28 May 2020
Compliance with ethical standards
:
: We have no conflicts of interest to declare.
: All procedures performed in studies involving human participants were carried out in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. The ethics committees of Hokkaido University Hospital, Sapporo Medical University Hospital, and Asahikawa Medical University approved the study. Based on the national Japanese law and guidelines for clinical research, informed consent was not needed from participants included in the study. This study registration number is UMIN000035900.