An external validation of the QCovid risk prediction algorithm for risk of mortality from COVID-19 in adults: a national validation cohort study in England oleh Vahé Nafilyan, PhD, Ben Humberstone, MRes, Nisha Mehta, MD, Ian Diamond, ProfPhD, Carol Coupland, ProfPhD, Luke Lorenzi, MSc, Piotr Pawelek, MSc, Ryan Schofield, BSc, Jasper Morgan, BSc, Paul Brown, Ronan Lyons, ProfMD, Aziz Sheikh, ProfMD, Julia Hippisley-Cox, ProfMD