Competing interests
Competing interestsYH received honoraria
from Astellas, AstraZeneca, MSD, Boehringer Ingelheim, Takeda, Bayer, Novo
Nordisk, Fuji, Mochida, Eli Lilly, Teijin Pharma, Daiichi Sankyo, Otsuka, Kowa,
Novartis, and Mitsubishi Tanabe and a research grant from Kao. TI received
lecture fees from JCR Pharmaceuticals and Kyowa Kirin and outsourcing fees from
the Organization for Clinical Medicine Promotion. KM received honoraria from
Daiichi Sankyo, Novartis, Takeda, and Pfizer and a research grant from Daiichi
Sankyo and Biotronik. AT received honoraria from Boehringer Ingelheim and
research funding from GlaxoSmithKline, Takeda, Bristol, Myers Squibb, and Novo
Nordisk. NK has received honoraria from AstraZeneca, Bayer Yakuhin, Boehringer
Ingelheim Japan, Daiichi Sankyo, Eli Lilly Japan, Mitsubishi Tanabe Pharma,
MSD, Novartis Pharma, Ono Pharmaceutical, Otsuka; Research grants from　Asahi Kasei, Astellas,
Boehringer Ingelheim Japan, Fujiyakuhin, Mitsubishi Tanabe Pharma, Mochida
Pharmaceutical, Novartis Pharma, and Teijin Pharma; and scholarships from Bayer
Yakuhin, Japan Lifeline, and Teijin Pharma. The authors declare that they have no competing
interests.