United Kingdom Research study into Ethnicity And COVID-19 outcomes in Healthcare workers (UK-REACH): a retrospective cohort study using linked routinely collected data, study proto... oleh Laura J Gray, David V Ford, Keith R Abrams, David McAllister, Laura Nellums, Catherine John, Chris Orton, Christopher A Martin, Lucy Teece, Carl Melbourne, Ibrahim Akubakar, Kamlesh Kunti, Robert Free