.it's not clear how well they'll stack up against current migraine therapies, because head-to-head studies haven't been done. . . march 2013 (20) . . . . .the study used data of 1,082 ct scans of stroke patients across 70 hospitals in britain. $17 OFF DEAL Birthday Collections From $17 @ Cosmetics Promo Codes 100% Success share GET DEAL 218 Used Today 50% OFF DEAL Up to 50% Off Velvet Lip Kits 100% Success share GET DEAL 181 Used Today $20 OFF DEAL Brushes From $20 @ Cosmetics Promo Codes 100% Success share 200 Used Today