Left appendage isolation plus left appendage occlusion on top of pulmonary vein isolation, a therapeutic option for a PVI nonresponder with persistent atrial fibrillation?. (5th March 2019) - Chen, Shaojie; Schmidt, Boris; Bordignon, Stefano; Perrotta, Laura; Bologna, Fabrizio; Nagase, Takahiko; Chun, K. R. Julian