Prognostic value of the electrocardiogram in patients with syncope: data from the group for syncope study in the emergency room (GESINUR) - Perez-Rodon, Jordi; Martinez-Alday, Jesus; Baron-Esquivias, Gonzalo; Martin, Alfonso; Garcia-Civera, Roberto; del Arco, Carmen; Cano-Gonzalez, Alicia; Moya-Mitjans, Angel; (Heart Rhythm, 2014)