Speckle-tracking echocardiography and MCR-feature tracking in Fontan circulation. Differences between right and left ventricles - Sanz-Pascual E; Bret-Zurita M; Diez-Sebastián J; Guereta-Silva LG; Aroca-Peinado Á; Gutiérrez-Larraya-aguado F (Revista Colombiana De Cardiologia, 2022)