Cluster Headache
BMJ 344:e2407, Nesbitt,A.D.,et al, 2012
Rhino-orbitocerebral Mucormycosis Associated with Cavernous Sinus Thrombosis: Case Report
Intl Arch Otorhinolaryngol 12:574-578, Haber,D.,et al, 2008
Cluster Headache Syndrome
Postgrad Med 91:96-104, Marks,D.R.&Rapoport,A.M., 1992