Result(35) COVID-19(35) objective(35) Identifier(34) report(34) SARS-CoV-2(26) participant(24) enrolled(22) Health(20) COVID-19 pandemic(19) collected(17) Registration(16) Patient(14) SARS-COV-2 infection(14) pandemic(13) information(12) protocol(12) Care(12) Infection(12) include(11) Analysis(11) outcome(11) expected(11) recruited(11) Cohort(11) help(10) individual(10) conducted(10) Spread(9) recruitment(9)