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Barone G, Scaramuzzo L, Zagra A, Giudici F, Perna A, Proietti L.Barone G, et al. Among authors: perna a.Eur Spine J. 2017 Oct;26(Suppl 4):457-463. doi: 10.1007/s00586-017-5136-1. Epub 2017 May 18.Eur Spine J. 2017.PMID: 28523382
Tamburrelli FC, Meluzio MC, Burrofato A, Perna A, Proietti L.Tamburrelli FC, et al. Among authors: perna a.Eur Spine J. 2018 Jun;27(Suppl 2):237-243. doi: 10.1007/s00586-018-5627-8. Epub 2018 May 11.Eur Spine J. 2018.PMID: 29752555