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Authors
Takayasu, Hajime https://orcid.org/0000-0002-7458-7495
Masumoto, Kouji
Tanaka, Nao
Aiyoshi, Tsubasa
Sasaki, Takato
Ono, Kentaro
Chiba, Fumiko
Urita, Yasuhisa
Shinkai, Toko
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Article History
Accepted: 21 April 2020
First Online: 28 April 2020
Compliance with ethical standards
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: The authors declare no conflicts of interest in association with the present study.
: The study was performed in accordance with the Ethical Guidelines for Medical and Health Research Involving Human Subjects by the Ministry of Health, Labour, and Welfare of Japan in 2014, in compliance with the 1964 Declaration of Helsinki (revised in 2013) and with the approval of the institutional review board of our local institute.
: Informed consent was not required as this study was observational and data collected were anonymized.
