Malycha, J, Farajidavar, N, Pimentel, M A F, Redfern, O, Clifton, D A, Tarassenko, L, Meredith, P, Prytherch, D, Ludbrook, G, Young, J D & Watkinson, P J 2019, ' The Effect of Fractional Inspired Oxygen Concentration on Early Warning Score Performance: a database analysis ', Resuscitation, vol. 139, pp. 192-199 . https://doi.org/10.1016/j.resuscitation.2019.04.002 Malycha, J, Farajidavar, N, Pimentel, M A F, Redfern, O, Clifton, D A, Tarassenko, L, Meredith, P, Prytherch, D, Ludbrook, G, Young, J D & Watkinson, P J 2019, ' The effect of fractional inspired oxygen concentration on early warning score performance : a database analysis ', Resuscitation, vol. 139, pp. 192-199 . https://doi.org/10.1016/j.resuscitation.2019.04.002