Topiramate intervention to prevent transformation of episodic migraine: the topiramate INTREPID study.
Lipton RB, Silberstein S, Dodick D, Cady R, Freitag F, Mathew N, Biondi DM, Ascher S, Olson WH, Hulihan J. Topiramate intervention to prevent transformation of episodic migraine: the topiramate INTREPID study. Cephalalgia. 2011 Jan; 31(1):18-30.