@article{Williamson2020,
author = {Williamson, E.J. and Walker, A.J. and Bhaskaran, K. and Bacon, S. and Bates, C. and Morton, C.E. and Curtis, H.J. and Mehrkar, A. and Evans, D. and Inglesby, P. and Cockburn, J. and McDonald, H.I. and MacKenna, B. and Tomlinson, L. and Douglas, I.J. and Rentsch, C.T. and Mathur, R. and Wong, A.Y.S. and Grieve, R. and Goldacre, B.},
title= {Factors associated with COVID-19-related death using OpenSAFELY},
year = {2020},
doi = {10.1038/s41586-020-2521-4},
volume = {584},
number = {7821},
pages = {430--436},
}