Conflict of interest
M.N. received lecture fees from Kyowa Kirin. S.K., M.K., M.O., and K.N. are employees of Kyowa Kirin Co., Ltd. T.A. received consulting fees from Kyowa Kirin, Kissei Pharmaceutical, Ono Pharmaceutical, Torii Pharmaceutical, Astellas, Bayer Japan, Sanwa Kagaku, and received lecture fees from Kyowa Kirin, Kissei Pharmaceutical, Ono Pharmaceutical, Torii Pharmaceutical, Astellas, Bayer Japan, and Sanwa Kagaku. M.F. received consulting fees from Sanwa Kagaku and Ono Pharmaceutical, and received lecture fees from Kyowa Kirin, Bayer Japan, and Kissei Pharmaceutical.