Hirahata, Masahiro
Kitagawa, Tomoaki
Yasui, Youichi
Oka, Hiroyuki
Yamamoto, Iwao
Yamada, Kazuaki
Fujita, Muneyoshi
Kawano, Hirotaka
Ishii, Keisuke
Article History
Received: 14 May 2021
Accepted: 21 January 2022
First Online: 27 January 2022
Declarations
:
: This retrospective study involving human participants was approved with the ethical standards of Teikyo University Ethical Review Board for Medical and Health Research Involving Human Subjects and was performed in accordance with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. All subjects had provided written informed consent for their data to be used for research purposes.
: Not applicable.
: All authors declare that they have no competing interests.