Reply to Michael Froehner, Rainer Koch, Manfred P. Wirth's Letter to the Editor re: Malte Rieken, Shahrokh F. Shariat, Luis A. Kluth, et al. Association of Cigarette Smoking and Smoking Cessation with Biochemical Recurrence of Prostate Cancer in Patients Treated with Radical Prostatectomy. Eur Urol. In press. http://dx.doi.org/10.1016/j.eururo.2015.05.038.

Rieken M Department of Urology, University Hospital Basel, Basel, Switzerland; Department of Urology, Weill Cornell Medical College, New York Presbyterian Hospital, New York, NY, USA. Electronic address: malte.rieken@usb.ch.
Shariat SF Department of Urology, Weill Cornell Medical College, New York Presbyterian Hospital, New York, NY, USA; Department of Urology, Medical University of Vienna, Vienna, Austria; Department of Urology, University of Texas Southwestern Medical Center, Dallas, TX, USA.