6 European Society of Cardiology, CS 80179 Biot 06903 Sophia Antipolis Cedex, France.
7 Karolinska Institutet, Department of Medicine, Karolinska University Hospital, 141 86 Stockholm, Sweden.
8 Department of Cardiology, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Center, 6202 AZ Maastricht, The Netherlands.
9 Hannover Heart Rhythm Center, Department of Cardiology and Angiology, Hannover Medical School, 30539 Hannover, Germany.