%0 Journal Article %T Chronic Cluster Headache with an Atypical Presentation and Treatment Response %A Hugo Morais %A Telma Santos %J Archive of "Case Reports in Neurological Medicine". %D 2016 %R 10.1155/2016/5230127 %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5227136/