Higher dose corticosteroids in patients admitted to hospital with COVID-19 who are hypoxic but not requiring ventilatory support (RECOVERY): a randomised, controlled, open-label, platform trial - Horby, PW; Emberson, JR; Basnyat, B; Campbell, M; Peto, L; Pessoa-Amorim, G; Staplin, N; Hamers, RL; Mafham, M; Haynes, R; Landray, M (The Lancet, 2023)