Reply to Vincenza Conteduca, Cristian Lolli, and Ugo De Giorgi's Letter to the Editor re: Pasquale Rescigno, David Lorente, Diletta Bianchini, et al. Prostate-specific Antigen Decline After 4 Weeks of Treatment with Abiraterone Acetate and Overall Survival in Patients with Metastatic Castration-resistant Prostate Cancer. Eur Urol 2016;70:724–31