Zolmitriptan nasal spray in the acute treatment of cluster headache: a meta-analysis of two studies.

Hedlund C, Rapoport AM, Dodick DW, Goadsby PJ. Zolmitriptan nasal spray in the acute treatment of cluster headache: a meta-analysis of two studies. Headache. 2009 Oct; 49(9):1315-23.

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