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;

QT interval greater than 460 ms in multiple electrocardiograms during follow-up in patients with Brugada syndrome: What does it contribute? Marcelo Puga Bravo; Jesús Castro; Yisel Gallardo;

Fighting the pandemic with collaboration at heart: Report from cardiologists in a COVID-19-dedicated Portuguese intensive care unit Pedro Ribeiro Queirós; Daniel Caeiro; Marta Ponte; Cláudio Guerreiro; Marisa Silva; Sara Pipa; Ana Lúcia Rios; Diana Adrião; Raul Neto; Pedro Teixeira; Gualter Silva; Mariana Silva; Nuno Dias Ferreira; Paula Castelões; Pedro Braga;