Competing interests
This study was funded by Bayer Yakuhin, Ltd. Toshihiro Kudo was associated with a donated fund laboratory of Yakult Honsha Co., Ltd.; Chugai Pharmaceutical Co., Ltd.; and Ono Pharmaceutical Co., Ltd. and received lecture fees from Chugai Pharmaceutical Co., Ltd.; Ono Pharmaceutical Co., Ltd.; Eli Lilly Japan Co., Ltd.; Bayer Yakuhin, Ltd.; Sanofi Co., Ltd.; Taiho Pharmaceutical Co., Ltd.; Merck Biopharma Co., Ltd.; and Takeda Pharmaceutical Co., Ltd. The other authors have no conflict of interest to declare.