inclusion criteria: ≥ 20 years of age. covid-19 survivor after de-isolation at post-acute stage about to be discharged or already at outpatient follow-up who still have symptoms or exercise intolerance.

inclusion criteria: ≥ 20 years of age. covid-19 survivor after de-isolation at post-acute stage about to be discharged or already at outpatient follow-up who still have symptoms or exercise intolerance.