MARK A. HALL is the Fred D. and Elizabeth L. Turnage Professor of Law and Public Health at Wake Forest University. He is the author or editor of numerous books, including "Making Medical Spending Decisions" and "Health Care Law and Ethics."SARA ROSENBAUM is the Harold and Jane Hirsh Professor and founding chair of the department of health policy at the George Washington University School of Public Health and Health Services. An author of more than 350 articles, studies, and health policy reports, she is also a coauthor of "Law and the American Health Care System."MARK A. HALL and SARA ROSENBAUM each contributed chapters to "Medical Professionalism in the New Information Age," edited by David J. Rothman and David Blumenthal (Rutgers University Press).