Ito, Akira http://orcid.org/0000-0002-7064-9863
Sato, Kenichi
Niizuma, Kuniyasu
Endo, Hidenori
Matsumoto, Yasushi
Tominaga, Teiji
Article History
Received: 11 June 2021
Accepted: 26 October 2021
First Online: 17 November 2021
Declarations
:
: The authors report no conflicts of interest concerning the materials or methods used in this study or the findings specified in this paper.
: The institutional ethics committee approved this retrospective study, which was performed according to the principles of the Declaration of Helsinki.
: Informed consent was not required for this retrospective study or review.
: Not required because all individual patient data were anonymized.