Stefan S. du Plessis, BScHons, Hons B(B&A), MSc, MBA, PhD (Stell), Division of Medical Physiology, Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Stellenbosch University, Tygerberg, South AfricaAshok Agarwal, PhD, HCLD (ABB), ELD (ACE), Center for Reproductive Medicine, Andrology Center, Glickman Urological and Kidney Institute, Cleveland Clinic, Cleveland, OH, USAEdmund S. Sabanegh, Jr., MD, Department of Urology, Cleveland Clinic, Cleveland, OH, USA