Reply to Julia Klap and Kevin R. Loughlin's letter to the editor re: Mohit Khera, David Crawford, Alvaro Morales, Andrea Salonia, Abraham Morgentaler. A new era of testosterone and prostate cancer: from physiology to clinical implications. Eur Urol 2014;65:115-23. Eur Urol. 2014 Aug; 66(2):e33.