TReating Incontinence for Underlying Mental and Physical Health (TRIUMPH): a study protocol for a multicenter, double-blinded, randomized, 3-arm trial to evaluate the multisystem effects of pharmacologic treatment strategies for urgency-predominant urinar Huang AJ, Walter LC, Yaffe K, Vittinghoff E, Kornblith E, Schembri M, Chang A, Subak LL Trials