Emil A. Tanagho, MD, Professor Emeritus, Department of Urology, University of California, San Francisco, San Francisco, CA; author of hundreds of scientific papers in the field; member of editorial board for Journal of Urology, Urology, and Neurourology and Urodynamics. Jack W. McAninch, MD, Professor and Vice Chair, Department of Urology, University of California, San Francisco; Editor of leading textbook, Traumatic and Reconstructive Urology, past president of American Board of Urology, American Urological Association; recognized by Good Housekeeping magazine as one of the top docs in the United States.