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Barberi, C., Colaizzi, C., Guerrini, J. et al. Whirl sign: a common misinterpreted radiological entity. Intern Emerg Med 16, 1703–1705 (2021). https://doi.org/10.1007/s11739-020-02571-1
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DOI: https://doi.org/10.1007/s11739-020-02571-1