Early PSA level decline is an independent predictor of biochemical and clinical control for salvage postprostatectomy radiotherapy. Blanchard, P.; Bakkour, M.; De Crevoisier, R.; Levy, A.; Baumert, H.; Patard, J. J.; Wibault, P.; Fizazi, K.; Bossi, A.. Urol Oncol. 2015; 108-e15-20: p.108-e15-20. doi:10.1016/j.urolonc.2014.07.020 10.1016/j.urolonc.2014.07.020. Epub 2014 Aug 28.Article