Reply to letter ¿Beta-blockers in acute coronary syndrome patients: The concept of `gradient of benefit¿¿ Jesús Velásquez-Rodríguez; Manuel Martínez-Sellés;

Influence of left ventricular systolic function on the long-term benefit of beta-blockers after ST-segment elevation myocardial infarction Jesús Velásquez-Rodríguez; Vanesa Bruña; Lourdes Vicent; Felipe Díez-Delhoyo; María Jesús Valero-Masa; Iago Sousa-Casasnovas; Miriam Juárez; Carolina Devesa; Francisco Fernández-Avilés; Manuel Martínez-Sellés;

Beta-blocker therapy after myocardial infarction or acute coronary syndrome: What we don¿t know José Ilídio Moreira;