[1] Leiden Univ Med Ctr, Leiden, Netherlands
[2] Germans Trias & Pujol Univ Hosp, Cardiol, Barcelona, Spain
[3] La Paz Univ Hosp, Cardiol, Madrid, Spain
[4] Univ Hosp Complex Albacete, Cardiol, Albacete, Spain
[5] Gen Univ Hosp Valencia Consortium, Cardiol, Valencia, Spain
[6] Hosp Santa Creu & Sant Pau, Cardiol, Barcelona, Spain