COVID-19(7) flank pain(2) outpatient clinic(2) pneumonic(2) significantly higher(2) Diagnosis(2) Computed tomography(2) Urology(2) infiltration(2) Shortness of breath(2) subject(2) SARS-CoV-2(2) defined(2) cross-sectional(2) with COVID-19(2) COVID-19 disease(2) Fever(2) Evidence(2) evidence of(2) control group(2) complaint(2) pathology(2) patients with COVID-19(2) lung(2) Region(2) CT scans(2) abdomen CT(2) training(2) abdomen(2) analysed(2)