Dimethyl fumarate in patients admitted to hospital with COVID-19 (RECOVERY): a randomised, controlled, open-label, platform trial oleh RECOVERY Collaborative Group, Peter W. Horby, Leon Peto, Natalie Staplin, Mark Campbell, Guilherme Pessoa-Amorim, Marion Mafham, Jonathan R. Emberson, Richard Stewart, Benjamin Prudon, Alison Uriel, Christopher A. Green, Devesh J. Dhasmana, Flora Malein, Jaydip Majumdar, Paul Collini, Jack Shurmer, Bryan Yates, J. Kenneth Baillie, Maya H. Buch, Jeremy Day, Saul N. Faust, Thomas Jaki, Katie Jeffery, Edmund Juszczak, Marian Knight, Wei Shen Lim, Alan Montgomery, Andrew Mumford, Kathryn Rowan, Guy Thwaites, Richard Haynes, Martin J. Landray