Acute total occlusion of the unprotected left main coronary artery: Patient characteristics and outcomes João Calvão; Marta Braga; Mariana Brandão; Andreia Campinas; André Alexandre; Ana Amador; Catarina Costa; João C. Silva; Marisa Silva; Bruno Brochado; João Freitas; Filipe Macedo;

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;

Interventional cardiology in cancer patients: A position paper from the Portuguese Cardiovascular Intervention Association and the Portuguese Cardio-Oncology Study Group of the Portuguese Society of Cardiology Miguel Nobre Menezes; Marta Tavares da Silva; Andreia Magalhães; Bruno Melica; Júlia Cristina Toste; Rita Calé; Manuel Almeida; Manuela Fiuza; Eduardo Infante de Oliveira;