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Article History

Received: 16 November 2020

Revised: 15 January 2021

Accepted: 19 January 2021

First Online: 11 March 2021

Declarations

:

: This study was approved by the ethics committee of our institution (the Ethics Committee of Keio University School of Medicine; 2009173).Written informed consent was obtained from all the patients in accordance with the Declaration of Helsinki protocol.

: J.I has declared no conflicts of interest. Y.K. has received grants or speaking fees from AbbVie, Astellas, Ayumi, Bristol-Myers, Chugai, Eisai, Eli Lilly, Hisamitsu, Jansen, Kissei, Pfizer, Sanofi, Takeda, Mitsubishi Tanabe, and UCB. J.K. has received grants or speaking fees from Astellas, Bristol-Myers, Chugai, Eisai, and Janssen. T.T. has received research grants or speaking fees from AbbVie, Asahi Kasei, Astellas, Astra Zeneca, Bristol-Myers, Chugai, Daiichi Sankyo, Eli Lilly, Janssen, Mitsubishi Tanabe, Novartis, Nippon Kayaku, Taiho, Takeda, Teijin, and Pfizer.