Tsukioka, Tsuneyuki
Muraoka, Hirotaka http://orcid.org/0000-0001-5764-2002
Ito, Kotaro
Hirahara, Naohisa
Okada, Shunya
Kaneda, Takashi
Article History
Received: 20 May 2021
Accepted: 10 August 2021
First Online: 17 August 2021
Declarations
:
: The authors declare that they have no conflict of interest.
: We designed and conducted a retrospective cohort study, which was approved by nihon university ethics committee (EC19-010).
: The requirement to obtain written informed consent was waived for this retrospective study. All procedures followed the guidelines of the Declaration of Helsinki, Ethical Principles for Medical Research Involving Human Subjects.
: This article does not contain any studies with animal subjects performed by the any of the authors.