Pamela Ellsworth, MD, is a Professor of Urology at University of Central Florida College of Medicine. She is also Chief of the Division of Pediatric Urology at Nemours Children’s Hospital in Orlando, Florida. Dr. Ellsworth is the author of many Jones & Bartlett Learning patient guides, including Little Black Book of Urology, 100 Questions & Answers About Erectile Dysfunction, 100 Questions & Answers About Bladder Cancer, and 100 Questions & Answers About Overactive Bladder and Incontinence as well as numerous book chapters and peer-reviewed journal articles. She has lectured throughout the world on a variety of urologic topics.Alan J. Wein, MD, PhD (Hon.), is Professor and Chair of the Division of Urology at the University of Pennsylvania School of Medicine, and Chief of Urology at the Hospital of the University of Pennsylvania. He is a graduate of Princeton University and received his MD from the University of Pennsylvania School of Medicine. He completed training in Surgery and Urology at the University of Pennsylvania including a fellowship at the Harrison Department of Surgical Research. He has been certified and recertified by the American Board of Urology. He was awarded an honorary PhD from the University of Patras, Greece, in September 2005. Dr. Wein has been recognized nationally and internationally through his many affiliations and professional memberships. He has served on and chaired numerous medical committees and consultations both domestically and internationally, and has received numerous awards and honors for excellence in the field of urology. He has been an editor of the gold standard text in the field, Campbell's Urology, since 1992 and is currently the editor-in-chief. Dr. Wein has authored or co-authored more than 830 articles and chapters, edited or co-edited 24 books, and has multiple multimedia presentations to his credit. His extensive experience in the field of urology has afforded him the opportunity to participate in academic activities, meetings, and courses as a speaker, faculty member, and chairperson. He is a prodigious lecturer with over 600 invited academic activities over the course of his career, including the co-chairmanship of the 1st, 2nd, 3rd, and 4th International Consultations on Incontinence. His fields of interest are in urologic oncology, the physiology and pharmacology of the lower urinary tract, the evaluation and management of voiding function and dysfunction, and urinary incontinence.