Cephalalgia · 2010 · 1K citations · 37 references
The results of PREEMPT 2 demonstrate that onabotulinumtoxinA is effective for prophylaxis of headache in adults with chronic migraine. Repeated onabotulinumtoxinA treatments were safe and well tolerated.
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A six-item short-form survey for measuring headache impact: The HIT-6™
Mark Kosinski, Martha Bayliss, John E. Ware et al. · Quality of Life Research · 2003 · 1.3K citations
New Appendix Criteria Open for a Broader Concept of Chronic Migraine
Jes Olesen, M.G. Bousser, H-C Diener et al. · Cephalalgia · 2006 · 912 citations
Epidemiology of Chronic Daily Headache in the General Population
Jesús Castillo, Pedro Muñoz, Victoria Guitera et al. · Headache The Journal of Head and Face Pain · 1999 · 719 citations · Full text