Hyndman, M. E., Bivalacqua, T. J., Feng, Z., Mettee, L. Z., Su, L.-M., Trock, B. J., & Pavlovich, C. P. (2015). Nightly sildenafil use after radical prostatectomy has adverse effects on urinary convalescence: Results from a randomized trial of nightly vs on-demand dosing regimens. Canadian Urological Association Journal, 9(11-12), 414–9. https://doi.org/10.5489/cuaj.3169