Commentary on: “Long-term functional outcomes after treatment for localized prostate cancer.” Resnick MJ, Koyama T, Fan KH, Albertsen PC, Goodman M, Hamilton AS, Hoffman RM, Potosky AL, Stanford JL, Stroup AM, Van Horn RL, Penson DF. Department of Urologic Surgery and the Center for Surgical Quality and Outcomes Research, Vanderbilt University, Nashville, TN.