COVID-19(4) Coronavirus infection(2) Risk factors(2) coronavirus(2) heart(2) therapy(2) Amiodarone(2) SARS-CoV-2.(2) SARS-CoV-2(1) functional capacity(1) Sudden cardiac death.(1) alternative(1) COVID-19 pandemic(1) exercise(1) inception(1) Post-COVID-19 syndrome(1) physical(1) Participation(1) feasible(1) Quality of life(1) Cardiac rehabilitation(1) Middle East respiratory syndrome(1) heart disease(1) Chloroquine(1) Suspension(1) Randomized controlled trial(1) physical activity(1) in-hospital mortality(1) CINAHL(1) Effect(1)