1. From the School of Pharmaceutical Sciences, University of Science Malaysia, Department of Urology, Lam Wah Ee Hospital, Department of Urology, Penang Adventist Hospital, Department of Urology, Gleneagles Medical Center, Department of Urology, Penang Hospital, Department of Urology, Island Hospital, Penang, Malaysia, and the Department of Urological Surgery, University of Washington School of Medicine, Seattle, Washington