Cardiac arrhythmias in patients presenting with COVID-19 treated in Portuguese hospitals: A national registry from the Portuguese Association of Arrhythmology, Pacing and Electrophysiology Dinis Mesquita; Pedro Carmo; Nuno Cabanelas; Nuno Santos; Vítor Martins; Victor Sanfins; Helena Cristina Costa; José Paulo Fontes; Paulo Fonseca; Leonor Parreira;

Pattern Matching Filter and multielectrode mapping catheter ¿ A new approach for complex premature ventricular contraction ablation Pedro A. Sousa; Natália António; Sérgio Barra; Luís Elvas; Lino Gonçalves;