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Authors
Kobayashi, Masaki
Honda, Miwako
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Article History
Received: 22 March 2021
Accepted: 2 July 2021
First Online: 22 July 2021
Declarations
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: Written informed consent was obtained from all participants. This research was approved by the Medical Ethical Committee of National Hospital Organization Tokyo Medical Center. This research was conducted in accordance with the Ethical Guidelines for Epidemiological Research in Japan and the Declaration of Helsinki.
: Not applicable.
: The authors declare that they have no competing interests.
