The Journal of Headache and Pain Scientia Dipòsit Digital de Documents de la UAB Universitat Autònoma de Barcelona The Journal of Headache and Pain, Vol 22, Iss 1, Pp 1-10 (2021) Sacco, S, Lampl, C, Maassen van den Brink, A, Caponnetto, V, Braschinsky, M, Ducros, A, Little, P, Pozo-Rosich, P, Reuter, U, Ruiz de la Torre, E, Sanchez Del Rio, M, Sinclair, A J, Martelletti, P, Katsarava, Z, Cakciri, G, Djamandi, P, Grabova, S, Halili, G, Kruja, J, Kuqo, A, Naco, D, Quka, A, Stefanidhi, L, Vyshka, G, Zekja, I, Bruera, O, Gómez, D, Guitian, B, Roma, J C, Chen, I L, Bashirova, S, Linkov, M, Van Den Abbeele, D, Vanderschueren, G, Araujo, R, Arruda, R, Catharino, A, Ciriaco, J, Dalla Corte, A, Dornas, R, Felsenfeld, B, Fonseca Taufner, A, Fragoso, Y, Hurtado, R, Isoni Martins, D, Londero, R, Amin, F M, Munksgaard, S, Pellesi, L, Schytz, H & On behalf of the Burden and Attitude to Resistant and Refractory (BARR) Study Group 2021, ' Burden and attitude to resistant and refractory migraine : a survey from the European Headache Federation with the endorsement of the European Migraine & Headache Alliance ', Journal of Headache and Pain, vol. 22, 39 . https://doi.org/10.1186/s10194-021-01252-4 Journal of Headache and Pain, 22(1):39. Springer-Verlag Italia