Reply from Authors re: Marcel D. Waldinger. The Dangers That Threaten Current Research of Premature Ejaculation: Using Validated Questionnaires, Performing Conjuring Tricks with Statistics, and Refusing to Use Real-Time Stopwatch Measurements of Intravaginal Ejaculation Latency Time. Eur Urol Focus. In press. http://dx.doi.org/10.1016/j.euf.2016.02.008