COVID-19(64) Coronavirus disease 2019(52) Patient(37) coronavirus(34) coronavirus disease(34) acute respiratory syndrome(32) SARS-CoV-2(28) disease(24) pandemic(24) Infection(23) identify(20) patients with COVID-19(20) evaluated(17) investigated(17) 95% confidence interval(16) association(15) risk(14) severe acute respiratory syndrome coronavirus-2(14) SARS-COV-2 infection(13) age(13) Care(13) Mortality(13) Accuracy(12) retrospective(12) polymerase chain(12) enrolled(11) Hepatitis B virus(11) Symptom(11) Admission(11) significantly higher(11)