Scientific letter
Optimized left bundle branch cardiac resynchronization therapy: effects on electrocardiogram and left ventricular function
Carmen Arveras Martínez Francisco Ribes Tur Blanca Trejo Velasco Víctor Pérez Roselló Clara Gunturiz-Beltrán Alejandro Bellver Navarro
Servicio de Cardiología, Hospital General Universitario de Castellón, Castellón de la Plana, Castellón, Spain
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