1. Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
2. Institute of Clinical Medicine, Cardiovascular Research Center, National Yang-Ming University, Taipei, Taiwan
3. Service de Cardiologie et Laboratoire d’Electrophysiologie Cardiaque, Centre Hospitalier Universitaire Trousseau et Université François Rabelais, 37044 Tours, France