COVID-19(10) Patient(7) with COVID-19(5) age(5) Mortality(5) tested(4) Older(4) SARS-CoV-2(4) Care(4) death(3) greater(3) Clinical outcome(3) median(3) Cohort(3) Diagnosis(3) positive(3) required(3) disease(3) identify(3) Admission(3) China(2) syndrome(2) worsening(2) presenting(2) progression(2) the disease(2) SARS-COV-2 infection(2) atypical symptom(2) outcomes(2) Effectiveness(2)