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Showing articles 0 to 4 of 4 Filter Applied: headache,severe (Click to remove) Migraine NEJM 377:553-561, Charles, A., 2017 Cluster Headache BMJ 344:e2407, Nesbitt,A.D.,et al, 2012 Behavior During a Cluster Headache Lancet 342:723-725, Blau,J.N., 1993 Spontaneous Dissections of the Vertebral Arteries Neurol 38:880-885, Mokri,B.,et al, 1988 Showing articles 0 to 4 of 4