Conflict of interest

Authors declare no conflicts of interest regarding this article. Keizo Kanasaki Lecture Fees: Boehringer Ingelheim Japan, Eli Lilly Japan, Astellas, Novo Nordisk Pharma, Mitsubishi Tanabe, Daiichi Sankyo, Sanofi, Sumitomo Pharma, Kowa, Kyowa,Kirin, Taisho, AstraZeneca, Bayer Collaboration: Boehringer Ingelheim Japan, Boehringer-Ingelheim (Germany), Taisho, Kowa Research support: Boehringer Ingelheim Japan, Kowa, Nipro, Life Scan Masaomi Nangaku Lecture Fees: Kyowa Kirin, Mitsubishi Tanabe, Bayer, Astellas, JT, AstraZeneca Manuscript Fees: Kyowa Kirin Collaboration: JT Research support: Kyowa Kirin, Mitsubishi Tanabe, Chugai, Boehringer Ingelheim Japan, Torii, Takeda, Daiichi Sankyo Kohjiro Ueki Lecture Fees: Sumitomo Pharma, Novo Nordisk Pharma, Taisho, Eli Lilly Japan, Abbott Japan, Bayer, Boehringer Ingelheim Japan, Kowa, Daiichi Sankyo Collaboration: Sumitomo Pharma, Boehringer Ingelheim Japan, Eli Lilly Japan, Novo Nordisk Pharma, Sanofi Research support: Sumitomo Pharma, Boehringer Ingelheim Japan, Takeda, Mitsubishi Tanabe, Daiichi Sankyo, Kyowa Kirin, Ono Pharmaceutical, Novo Nordisk Pharma.

Research involved in human or animal participants

This article does not contain any studies with human or animal subjects performed by any of the authors.