Follow-up(5) material(5) COVID-19(5) Observational cohort study(5) participant(5) Year(5) age(5) abnormality(5) Result(5) pulmonary(4) was used(3) functional(3) hospital(3) Symptoms(3) Older age(3) chest CT scan(3) impairment(3) traction bronchiectasis(3) nine(3) Adult patient(3) cough(3) Survivors(3) Admission(3) Volume(3) were assessed(3) Thoracic CT scan(3) reported(3) majority(3) fibrosis(3) discharge(3)