Solifenacin appears effective and well tolerated in patients with symptomatic idiopathic detrusor overactivity in a placebo- and tolterodine-controlled phase 2 dose-finding study. - Chapple,C.R.; Arano,P.; Bosch,J.L.; De Ridder,D.; Kramer,A.E.; Ridder,A.M. (BJU Int, 2004)