Can cigarette smoking worsen the clinical course of cluster headache?

I Tiraferri, F Righi, M Zappaterra, M Ciccarese, LA Pini, A Ferrari, MM Cainazzo
2013 The Journal of Headache and Pain  
doi:10.1186/1129-2377-14-s1-p54 fatcat:ekvi5rdml5cgzcp6u3c3ktndta