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Authors
Arai, Yasumichi
Oguma, Yuko
Abe, Yukiko
Takayama, Midori
Hara, Azusa
Urushihara, Hisashi
Takebayashi, Toru
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Article History
Received: 16 October 2020
Accepted: 9 February 2021
First Online: 24 February 2021
Ethics approval and consent to participate
: We have complied with all relevant regulations and guidelines for work with human subjects. The KAWP was approved by the ethics committee of the Keio University School of Medicine (ID: 20160297) and was registered in the University Hospital Medical Information Network Clinical Trial Registry as an observational study (ID: UMIN000026053). Written informed consent to participate in the KAWP was obtained from all participants.
: Not applicable.
: The authors have no conflicts of interest to declare.
