Yunaga, Hiroto http://orcid.org/0000-0001-8300-9542
Ohta, Yasutoshi
Kishimoto, Junichi
Kitao, Shinichiro
Ishibashi, Mana
Fujii, Shinya
Article History
Received: 6 February 2020
Accepted: 30 July 2020
First Online: 7 August 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 ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: This single-center retrospectively study protocol was approved by the institutional ethics committee, and written informed consent was waived.