ABC | Volume 114, Nº6, June 2020

Brazilian Society of Cardiology ISSN-0066-782X Volume Number 114 6 June 2020 Chief Editor Carlos Rochitte Internacional Coeditor João Lima Editors Alexandre Colafranceschi Gláucia Moraes Ieda Jatene João Cavalcante Marcio Bittencourt Marina Okoshi Mauricio Scanavacca Paulo Jardim Pedro Lemos Ricardo Stein Ruhong Jiang Tiago Senra Vitor Guerra Covid-19: Difficulties and Prospects Why We Build Models Brazilian Registry of Acute Coronary Syndromes Chemotherapy-related Coronary-artery Disease Coronavirus and Myocardium Physical Activity and Coronavirus Preventing Torsades de Pointes during Hydroxychloroquine/Azithromycin Treatment Acute Coronary Syndromes in the Covid Era COVID-19 and Cardiac Collateral Damage Figure 2 of Page 1019.