Linked to in the article, but may be paywalled : https://jamanetwork.com/journals/jamacardiology/fullarticle/...
Key Points: Question What are the cardiovascular effects in unselected patients with recent coronavirus disease 2019 (COVID-19)?
Findings: In this cohort study including 100 patients recently recovered from COVID-19 identified from a COVID-19 test center, cardiac magnetic resonance imaging revealed cardiac involvement in 78 patients (78%) and ongoing myocardial inflammation in 60 patients (60%), which was independent of preexisting conditions, severity and overall course of the acute illness, and the time from the original diagnosis.