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Authors
Imai, Yasuo https://orcid.org/0000-0002-1422-7789
Ichinose, Masanori
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Article History
Received: 6 September 2021
Accepted: 15 February 2022
First Online: 23 February 2022
Declarations
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: This study was approved by the ethical committees of the participating hospitals: Dokkyo Medical University Koshigaya Hospital, Koshigaya 23008; Tokyo Kosei Nenkin Hospital, 30/11/2011; Saiseikai Kawaguchi General Hospital, no. 24-5: International University of Health and Welfare, FK-94. Due to the retrospective study design and the anonymization of data, consent to participate was not necessary.
: Not applicable.
: The authors declare that they have no competing interests.
