“…We compared two cohorts of adult patients with SARS-CoV-2 polymerase chain reaction (PCR) test, and an ECG performed between March 1, 2020, and September 13, 2020, in a retrospective double-cohort study, āCardiovascular Risk Stratification in Covid-19ā (CaVaR-Co19; NCT04555187) [ 3 ]. The study has been approved by the Oregon Health & Science University and Cleveland Clinic Institutional Review Boards.…”