Europace Europace Influence of baseline QRS on the left ventricular ejection fraction recovery after frequent premature ventricular complex ablation. Penela D Jáuregui B Fernández-Armenta J Aguinaga L Tercedor L Ordóñez A Acosta J Bisbal F Vassanelli F Teres C Aceña M Martí-Almor J De Sensi F Vatasescu R Borràs R Sánchez Millán P Soto-Iglesias D Oller Martínez G Carballo J Berruezo A 2020 research-article