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Heyne G, Ewens S, Kirsten H, Fakler JKM, Özkurtul O, Hempel G, Krämer S, Struck MF.Heyne G, et al. Among authors: struck mf.Emerg Med J. 2022 Jul;39(7):534-539. doi: 10.1136/emermed-2021-211786. Epub 2021 Aug 10.Emerg Med J. 2022.PMID: 34376465Free PMC article.