@article{kbcsm:519, author = {{Sacco, Simona and Lampl, Christian and Maassen van den Brink, Antoinette and Caponnetto, Valeria and Braschinsky, Mark and Ducros, Anne and Little, Patrick and Pozo-Rosich, Patricia and Reuter, Uwe and Ruiz de la Torre, Elena and Sanchez Del Rio, Margarita and Sinclair, Alexandra J. and Martelletti, Paolo and Katsarava, Zaza and Dubroja, Ivan and Hucika, Zlatko and Lisak, Marijana and Lovrencic-Huzjan, Arijana and Lušić, Ivo and Mahovic Lakusic, Darija}}, title = {{Burden and attitude to resistant and refractory migraine: a survey from the European Headache Federation with the endorsement of the European Migraine & Headache Alliance}}, }