1. Bigal ME, Rapoport AM, Sheftell FD, Tepper SJ, Lipton RB. Transformed migraine and medication overuse in a tertiary headache centre-clinical characteristics and treatment outcomes. Cephalalgia 2004;24:483-490.
2. Ferrari A, Sternieri E, Ferraris E, Bertolini A. Emerging problems in the pharmacology of migraine: interactions between triptans and drugs for prophylaxis. Pharmacol Res 2003;48:1-9.
3. Goadsby PJ, Lipton RB, Ferrari MD. Migraine. Current understanding and treatment. N Engl J Med 2002;346:257-270.
4. Headache Classification Subcommittee of the International Headache Society. The International Classification of Headache Disorders. 2nd ed. Cephalalgia 2004;24:S1. 9-160.
5. Landy SH, Lobo BL. Migraine treatment throughout the lifecycle. Expert Rev Neurotherapeutics 2005;5:343-353.
6. Loder E, Biondi D. General principles of migraine management. The changing role of prevention. Headache 2005;45:S1. 33-47.
7. Silberstein SD, Goadsby PJ. Migraine: preventive treatment. Cephalalgia 2002;22:491-512.