The Journal of Headache and Pain JOURNAL OF HEADACHE AND PAIN Schramm, S, Uluduz, D, Gouveia, R G, Jensen, R, Siva, A, Uygunoglu, U, Gvantsa, G, Mania, M, Braschinsky, M, Filatova, E, Latysheva, N, Osipova, V, Skorobogatykh, K, Azimova, J, Straube, A, Eren, O E, Martelletti, P, De Angelis, V, Negro, A, Linde, M, Hagen, K, Radojicic, A, Zidverc-Trajkovic, J, Podgorac, A, Paemeleire, K, De Pue, A, Lampl, C, Steiner, T J & Katsarava, Z 2016, ' Headache service quality : evaluation of quality indicators in 14 specialist-care centres ', Journal of Headache and Pain, vol. 17, 111 . https://doi.org/10.1186/s10194-016-0707-9