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Showing articles 0 to 2 of 2 Filter Applied: intravenous (Click to remove) Cluster Headache BMJ 344:e2407, Nesbitt,A.D.,et al, 2012 Intravenous Dihydroergotamine for Inpatient Management of Refractory Primary Headaches Neurol 77:1827-1832, Nagy, A.J.,et al, 2011 Showing articles 0 to 2 of 2