Carvedilol versus flecainide treatment in idiopathic ventricular extrasystoles and tachycardias (CARFLECT IV) trial: Rationale and design Mauro Trincado Ave; María Brión; Brais Díaz Fernández; Alejandro Blanco-Verea; Teresa Cabaleiro Ocampo; Ana Estany Gestal; Carlos Tilves; María Moure González; Ana Seoane Blanco; Federico García-Rodeja; José Ramón González-Juanatey; Moisés Rodríguez Mañero;

Etiology of sudden cardiac arrest: Literature review and proposal for an intensive care unit study protocol João Cravo; Daniel Inácio Cazeiro; Oana Moldovan; Nuno Cortez-Dias; Doroteia Silva;

Prediction of response to cardiac resynchronization therapy using electrocardiographic criteria: A systematic review Paulo Dias Costa; João Pedro Bessa; Mariana Canelas Pais; Daniela Ferreira-Santos; Fernando Montenegro Sá; Matilde Monteiro-Soares; António Hipólito-Reis; Mário Martins Oliveira; Pedro Pereira Rodrigues;