Refractory chronic cluster headache: a consensus statement on clinical definition from the European Headache Federation
Title:
Refractory chronic cluster headache: a consensus statement on clinical definition from the European Headache Federation
Author:
Mitsikostas, Dimos D Edvinsson, Lars Jensen, Rigmor H Katsarava, Zaza Lampl, Christian Negro, Andrea Osipova, Vera Paemeleire, Koen Siva, Aksel Valade, Dominique Martelletti, Paolo