McGraw-Hill authors represent the leading experts in their fields and are dedicated to improving the lives, careers, and interests of readers worldwide Leonard G. Gomella, MD, FACS The Bernard W. Goodwin, Jr., Professor, Chairman, Department of Urology Jefferson Medical College, Thomas Jefferson University, 1015 Walnut Street, Room 1112 Philadelphia, PA 19107-5083 TEL: (215) 955-1702 e-mail:
[email protected] McGraw-Hill authors represent the leading experts in their fields and are dedicated to improving the lives, careers, and interests of readers worldwide Alan T. Lefor, MD, MPH, FACS Director, Division of Surgical Oncology Director, Surgical Education and Academic Affairs Cedars-Sinai Medical Center Associate Professor of Clinical Surgery University of California, Los Angeles Los Angeles, California Leonard G. Gomella, MD, FACS Chairman, Department of Urology Jefferson Medical College Thomas Jefferson University 1015 Walnut Street Philadelphia, PA 19107-5083 Eric A. Wiebke, MD, FACS Associate Professor Department of Surgery Indiana University Indianapolis, Indiana Douglas L. Fraker, MD, FACS Associate Professor of Surgery University of Pennsylvania Philadelphia, Pennsylvania