1. Department of MedicineSection of Cardiac Electrophysiology, Perelman School of Medicine, University of PennsylvaniaPhiladelphia Pennsylvania
2. Department of CardiologySun Yat‐Sen Memorial Hospital, Sun Yat‐Sen UniversityGuangzhou China
3. Department of RadiologyHospital of the University of Pennsylvania, Perelman School of Medicine, University of PennsylvaniaPhiladelphia Pennsylvania
4. Division of Image ProcessingLeiden University Medical CentreLeiden The Netherlands