COVID-19(8) 2019 novel coronavirus(3) 2019-nCoV(3) pneumonia.(2) Coronavirus disease 2019(2) disease severity(1) Bronchoscope-guided(1) Diagnosis and treatment(1) Novel coronavirus(1) Cause analysis(1) Influenza,humen(1) renal replacement therapy(1) Lopinavir(1) Oxygenation(1) pulmonary rehabilitation(1) indications(1) Pneumonia(1) Tomography, x-ray computed.(1) Inflammatory cytokines.(1) military(1) Henan province.(1) discharge from hospital(1) Infections in birds(1) Respiratory distress syndrome, adult(1) Prognosis(1) Chloroquine(1) Respiratory failure(1) throat swab(1) sampling.(1) Pulmonary function testing.(1)