Naratriptan in the preventive treatment of refractory chronic migraine: a review of 27 cases.

Rapoport AM, Bigal ME, Volcy M, Sheftell FD, Feleppa M, Tepper SJ. Naratriptan in the preventive treatment of refractory chronic migraine: a review of 27 cases. Headache. 2003 May; 43(5):482-9.

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