1. From the *Division of Cardiology, Department of Medicine, Cedars‐Sinai Medical Center , and †Department of Medicine (Cardiology) and Physiology and Physiological Science, David Geffen School of Medicine, UCLA, Los Angeles, California, USA ; ‡Taichung Veterans General Hospital and Yang‐Ming Medical College, Taiwan ; and ¶Division of Cardiology, Department of Internal Medicine, National Taiwan University School of Medicine, Taipei, Taiwan