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Spekker E, Laborc KF, Bohár Z, Nagy-Grócz G, Fejes-Szabó A, Szűcs M, Vécsei L, Párdutz Á.Spekker E, et al. Among authors: nagy grocz g.J Headache Pain. 2021 Mar 31;22(1):17. doi: 10.1186/s10194-021-01229-3.J Headache Pain. 2021.PMID: 33789568Free PMC article.