1. Division of Cardiology, Electrophysiology Unit, Fondazione Cardiocentro Ticino, via tesserete 48, Lugano, Switzerland
2. Heart Rhythm Centre, Tokyo Medical and Dental University, Tokyo, Japan
3. Heart Rhythm Management Centre, UZ-VUB, Brussels, Belgium
4. Department of Molecular Medicine, University of Pavia and Department of Cardiology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy