1. Division of Pharmaceutical Evaluation and Policy, University of Arkansas for Medical Sciences (UAMS), Little Rock, AR 72205, USA
2. Department of Surgery, College of Medicine, University of Cincinnati, Cincinnati, OH 45221, USA
3. Asiut University Hospitals and School of Medicine, Asiut 2074020, Egypt
4. Department of Urology, Ain Shams University, Cairo 11566, Egypt
5. Healthcare Delivery Research Program, Division of Cancer Control and Population Sciences, National Cancer Institute, Bethesda, MD 20892, USA