Impaired Magnetic Resonance Myocardial Strain in Unoperated Ebstein's Anomaly Is Associated with Reduced Exercise Capacity. - Dardeer, Ahmed M.; Stoll, Victoria M.; Liu, Boyang; Moody, William E.; Chue, Colin D.; Clift, Paul; Wesolowski, Roman; Hudsmith, Lucy E.; Steeds, Richard P. (Congenital Heart Disease, 2025)