Suppression of amiodarone‐induced torsade de pointes by landiolol in a patient with atrial fibrillation‐mediated cardiomyopathy oleh Koji Takahashi, Mina Yamashita, Tomoki Sakaue, Daijiro Enomoto, Shigeki Uemura, Takafumi Okura, Shuntaro Ikeda, Masafumi Takemoto, Yutaka Utsunomiya, Takashi Hyodo