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Article History

Received: 3 November 2020

Accepted: 3 March 2021

First Online: 31 March 2021

Declarations

:

: M. Ando reports grants from Kyowa Kirin Co. Ltd., outside the submitted work. T. Yoshikawa reports personal fees from Ono Pharmaceutical Co., Ltd., personal fees from MSD K.K., personal fees from Eli Lilly Japan K.K., personal fees from Taiho Pharmaceutical Co., Ltd., personal fees from Chugai Pharmaceutical Co., Ltd., personal fees from Nippon Kayaku Co., Ltd., personal fees from Bristol-Myers Squibb, personal fees from Daiichi Sankyo Co., Ltd., personal fees from TERUMO Co., personal fees from Johnson & Johnson K.K., personal fees from Pfizer Inc., personal fees from Olympus Co., personal fees from Yakult Honsha Co., personal fees from Eisai Co., personal fees from Kyowa Hakko Kirin Co., Ltd., personal fees from Covidien Japan Co., Ltd., outside the submitted work. T. Yamada reports personal fees from Ono Pharmaceutical Co., Ltd., personal fees from Bristol-Myers Squibb, personal fees from Taiho Pharmaceutical Co., Ltd., outside the submitted work. Fukushima reports grants from Ono Pharmaceutical Co., Ltd., grants from Taiho Pharmaceutical Co., Ltd., grants from Chugai Pharmaceutical Co., Ltd, outside the submitted work. Kodera reports grants and personal fees from Taiho Pharmaceutical Co., Ltd., grants and personal fees from Chugai Pharmaceutical Co., Ltd., grants and personal fees from Takeda Pharmaceutical Co., Ltd., grants from MSD K.K., grants from Nippon Kayaku Co., Ltd., grants and personal fees from Yakult Honsha Co., grants and personal fees from Eli Lilly Japan K.K., grants and personal fees from Ono Pharmaceutical Co., Ltd., grants from Kaken Pharmaceutical Co., Ltd., grants and personal fees from Covidien Japan Co., Ltd., grants from EA Pharma　Co., grants from Novartis Pharma K.K., grants from KCI K.K., grants from Maruho Co., Ltd., grants from Daiichi Sankyo Co., Ltd., grants and personal fees from Otsuka Pharmaceutical Co., Ltd., grants from TSUMURA & Co., grants from Sawai Pharmaceutical Co., personal fees from Johnson & Johnson K.K., personal fees from MSD K.K., grants from Bristol-Myers Squibb, grants from Sanofi K.K., outside the submitted work. All remaining authors declare that they have no conflict of interest.

: All the procedures were followed in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1964 and later versions.

: Informed consent was obtained from all patients before being included in the study.

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