Clinical characteristics of cluster headache (open access)
Conflicts of interests: Advisory board for Allergan, Novartis, Reckitt Beckinser & TEVA. Speaker for Novartis, Reckitt Beckinser & TEVA. Grant support from TEVA, Novartis & Amgen
Conflicts of interests: Advisory board for Allergan, Novartis, Reckitt Beckinser & TEVA. Speaker for Novartis, Reckitt Beckinser & TEVA. Grant support from TEVA, Novartis & Amgen