Variability in COVID-19 in-hospital mortality rates between national health service trusts and regions in England: A national observational study for the Getting It Right First Tim... oleh William K. Gray, Annakan V Navaratnam, Jamie Day, Pratusha Babu, Shona Mackinnon, Ini Adelaja, Sam Bartlett-Pestell, Chris Moulton, Cliff Mann, Anna Batchelor, Michael Swart, Chris Snowden, Philip Dyer, Michael Jones, Martin Allen, Adrian Hopper, Gerry Rayman, Partha Kar, Andrew Wheeler, Sue Eve-Jones, Kevin J Fong, John T Machin, Julia Wendon, Tim W.R. Briggs