1. Cost and prediction of lost productive time in chronic migraine and episodic migraine: results from the American migraine prevalence and prevention (AMPP) study;Serrano;Value Health,2013
2. Healthcare resource utilization and direct costs associated with frequent nausea in episodic migraine: results from the American Migraine Prevalence and Prevention (AMPP) Study;Lipton;J Med Econ,2013
3. The International Headache Disorders;Classification Committee of the International Headache Society;Cephalgia,2004
4. The international classification of headache disorders-Appendix;Olesen;Cephalgia,2004
5. Obermann M, Katsarava Z. Epidemiology of unilateral headaches. N Expert Rev Neurother;8:1,313–20.