American College of Obstetrics and Gynecology (ACOG) Professor, Department of Obstetrics and Gynecology, University of Wisconsin Medical School, Madison, WI Douglas W. Laube, M.D., M.Ed. Professor and Chair, Department of Obstetrics and Gynecology, University of Virginia, Charlottesville, VA Professor, Department of Obstetrics and Gynecology, University of Missouri at Kansas City, Kansas City, MO Charles R. B. Beckmann, M.D., M.H.P.E. Barbara M. Barzansky, Ph.D., M.H.P.E. Roger P. Smith, M.D. v vi