Chronic cluster headache: a French clinical descriptive study
A Donnet, M Lanteri-Minet, E Guegan-Massardier, G Mick, N Fabre, G Géraud, C Lucas, M Navez, D Valade, on behalf of the Société Française d’Etude des Migraines et Céphalées (SFEMC)
Journal of Neurology, Neurosurgery & Psychiatry Dec 2007, 78 (12) 1354-1358; DOI: 10.1136/jnnp.2006.112037