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Answer to the Letter to the Editor of J. Li et al. concerning “Surgical treatment of sacral chordoma: survival and prognostic factors” by C. Ruosi et al. (Eur Spine J; 2015; 24(Suppl 7):S912–S917)

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Ruosi, C., Colella, G., Di Donato, S.L. et al. Answer to the Letter to the Editor of J. Li et al. concerning “Surgical treatment of sacral chordoma: survival and prognostic factors” by C. Ruosi et al. (Eur Spine J; 2015; 24(Suppl 7):S912–S917). Eur Spine J 26, 283–284 (2017). https://doi.org/10.1007/s00586-016-4824-6

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