Heart rate at presentation of COVID-19: Can SARS-CoV-2 be a cause of dysautonomia? Andrea Severo Sánchez; Juan R. Rey; Ángel Manuel Iniesta; Jose L. Merino; Sergio Castrejón-Castrejón; Esteban López-de-Sá; Juan Caro-Codón;

Potential use of renin-angiotensin-aldosterone system inhibitors to reduce COVID-19 severity Jorge Gonçalves; Catarina D. Santos; Paula Fresco; Fernando Fernandez-Llimos;

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;