Correlation Between Myocardial Perfusion and Contractility by SPECT and MRI, and Electromechanical Mapping Parameters in Patients with Advanced Coronary Artery Disease. A PRECISE Substudy - Sanz-Ruiz, Ricardo; Gutierrez Ibanes, Enrique; Perez David, Esther; Alonso Farto, Juan Carldos; Elizaga Corrales, Jaime; Fernandez Santos, Maria Eugenia; Sanchez Fernandez, Pedro Luis; Fernandez Aviles, Francisco (CIRCULATION, 2012)