Cohort Profile: The United Kingdom Research study into Ethnicity and COVID-19 outcomes in Healthcare workers (UK-REACH). (27th August 2022) - Bryant, Luke; Free, Robert C; Woolf, Katherine; Melbourne, Carl; Guyatt, Anna L; John, Catherine; Gupta, Amit; Gray, Laura J; Nellums, Laura; Martin, Christopher A; McManus, I Chris; Garwood, Claire; et al.