1. New concepts in the pathogenesis of headache;Silberstein;Pain Management,1990
2. Classification and diagnostic criteria for headache disorders. Cranial neuralgias and facial pain;Headache Classification Committee of the International Headache Society;Cephalalgia,1988
3. Epidemiology of headache in a general population—a prevalence study;Rasmussen;J Clin Epidemiol,1991
4. Frishberg BM, Rosenberg JH, Matchar DB, et al. Evidence-based guidelines in the primary care setting: neuroimaging in patients with nonacute headache. www.aan.org. Accessed April, 1999.
5. Practice parameter: evidence-based guidelines for migraine headache (an evidence-based review). Report of the quality standards subcommittee of the American Academy of Neurology;Neurology,2000