{{Cite journal| doi = 10.1097/CCM.0000000000005842| issn = 1530-0293 (Electronic) 0090-3493 (Print) 0090-3493 (Linking)| volume = 51| issue = 7| pages = 881–891| last1 = Candel| first1 = B. G. J.| last2 = Nissen| first2 = S. K.| last3 = Nickel| first3 = C. H.| last4 = Raven| first4 = W.| last5 = Thijssen| first5 = W.| last6 = Gaakeer| first6 = M. I.| last7 = Lassen| first7 = A. T.| last8 = Brabrand| first8 = M.| last9 = Steyerberg| first9 = E. W.| last10 = de Jonge| first10 = E.| last11 = de Groot| first11 = B.| title = Development and External Validation of the International Early Warning Score for Improved Age- and Sex-Adjusted In-Hospital Mortality Prediction in the Emergency Department| journal = Crit Care Med| date = 2023-03-24| pmid = 36951452}}