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;

Impact of catheter ablation for atrial fibrillation in patients with heart failure and left ventricular systolic dysfunction Joana Maria Ribeiro; Pedro A. Sousa; Natália António; Rui Baptista; Luís Elvas; Sérgio Barra; Lino Gonçalves;

Medication adherence to direct anticoagulants in patients with non-valvular atrial fibrillation ¿ A real world analysis Catarina Brízido; António Miguel Ferreira; Pedro Lopes; Christopher Strong; Gustavo Sá Mendes; Francisco Fernandes Gama; Anaí Durazzo; Gustavo Rocha Rodrigues; Daniel Matos; Sara Guerreiro; Sérgio Madeira; Jorge Ferreira; Pedro Adragão; Miguel Mendes;