COVID-19(173) Result(133) Patient(128) Emergency(104) coronavirus disease(81) pandemic(80) COVID-19 pandemic(65) Department(64) SARS-CoV-2(52) positive(51) hospital(51) Care(48) outcome(47) coronavirus(41) reported(40) performed(40) healthcare(40) retrospective(39) Health(38) help(37) risk(35) conducted(34) acute respiratory syndrome(34) determine(33) Community(33) tested(32) 95% confidence interval(31) Spread(31) Volume(29) patients(29)