BRADFORD H. GRAY , Ph.D., is a senior professional associate at the Institute of Medicine. He was study director for the Institute studies Access to Medical Review Data: Disclosure Policy for Professional Standards Review Organizations (1981), Health Care in a Context of Civil Rights (1981), and Evaluating Patient Package Inserts (1979). The author of Human Subjects in Medical Experimentation (New York: Wiley-Interscience, 1975), he served on the staff of both the National Commission for the Protection of Human Subjects in Biomedical and Behavioral Research and the President's Commission for the Study of Ethical Problems in Medicine. Dr. Gray holds a Ph.D. in sociology from Yale University and taught at the University of North Carolina, Chapel Hill. He is currently the study director of the Institute of Medicine's study of physician involvement in for-profit enterprise in health care.

JOHN F. HORTY obtained his A.B. from Amherst College and his LL.B. from Harvard Law School. Mr. Horty is a member of the law firm of Horty, Springer & Mattern, president of Pittsburgh Planning Associates, Inc., both of Pittsburgh, Pennsylvania, and is counsel to the firm of Swidler, Berlin & Strelow, chartered, in Washington, D.C. He is the author and editor of two publications, Action-Kit for Hospital Law and Action-Kit for Hospital Trustees, and is author of Patient Care Law. He presently serves as president of the National Council of Community Hospitals, as chairman of the board of directors of Central Medical Center and Hospital in Pittsburgh, and as a director and vice-president of Estes Park Institute. Mr. Horty is an honorary fellow of the American College of Hospital Administrators, a recipient of the Award of Honor of the American Hospital Association, and holds an honorary life membership in the American Hospital Association.

HAROLD S. LUFT , Ph.D., is professor of health economics, Institute for Health Policy Studies, University of California, San Francisco. His recent areas of research interest include health maintenance organizations, competition among hospitals, and multiple choice insurance arrangements. He is the author of Health Maintenance Organizations: Dimensions of Performance (New York: Wiley-Interscience) and with Joan Trauner and Joy Robinson has recently completed a monograph for the Federal Trade Commission, Entrepreneurial Trends in Health Care Delivery: The Development of Retail Dentistry and Freestanding Ambulatory Services.

FRANCES H. MILLER is professor of law at Boston University School of Law and has served in several health regulatory capacities in state government. Her writing in the health law field has focused on the potential for provider conflict of interest. See, for example, ''Antitrust and the Certificate of Need: Health Systems Agencies, the Planning Act and Regulatory Capture," Georgetown Law Journal 68 (1980), p. 873; and "PSRO Data and Information: Disclosure to State Health Regulatory Agencies," Boston University Law Review 57 (1977), p. 245. She was recently named to a three-year Kellogg Foundation Fellowship that will enable her to study international health care delivery systems.

DANIEL M. MULHOLLAND III is a member of the law firm of Horty, Springer & Mattern, of Pittsburgh, Pennsylvania, which specializes in the practice of hospital and health care law. He also is a research editor for Action-Kit for Hospital Law, a monthly newsletter and treatise read nationwide. He has coauthored a number of articles in legal and hospital journals concerning the law as it relates to hospital chief executive officers, trustees, and medical staffs. Mr. Mulholland received his bachelor of arts and master of arts degrees from Duquesne University and his juris doctor degree from the University of Pittsburgh School of Law.

STEPHEN M. SHORTELL , Ph.D., is the A. C. Buehler distinguished professor of hospital and health services management and professor of organization behavior in the Department of Organization Behavior at the J. L. Kellogg Graduate School of Management, Northwestern University. He also holds appointments in the Department of Sociology and the Division of Community Medicine, School of Medicine, at Northwestern and formerly served as professor and chairman of the Department of Health Services, School of Public Health and Community Medicine, at the University of Washington, Seattle. Dr. Shortell received his undergraduate degree from the University of Notre Dame, his master's degree in public health and hospital administration from UCLA, and his Ph.D. in the behavioral sciences from the University of Chicago. He is the author of numerous articles and author or coauthor of several books and monographs, including Organizational Research in Hospitals and Health Program Evaluation. He serves on the editorial boards of several journals and is a consultant to a number of federal agencies, hospitals, and private foundations. He is currently conducting research on hospital-sponsored group practices and on hospital organizational responses to regulation.

RICHARD B. SIEGRIST, JR., is a project manager in the financial planning department at New England Medical Center in Boston. He holds an M.S. degree in accounting from New York University and a B.A. degree in political economy from Williams College. He is also a CPA and received his M.B.A. from Harvard Business School, where he wrote case studies on Hospital Corporation of America and Humana, Inc., for the Harvard Business School under the direction of Professor Regina E. Herzlinger.

JESSICA TOWNSEND has a degree in philosophy, politics, and economics from Oxford University, England. After a number of years as an economist and as a journalist for Business Week, she received a master's degree in health care administration from George Washington University and entered the field of health policy research. She subsequently participated in studies at the American Health Planning Association and the Institute of Medicine.

ROBERT M. VEATCH, Ph.D., is professor of medical ethics at the Kennedy Institute of Ethics, Georgetown University. He has training in pharmacology and obtained his doctorate in ethics from Harvard University. His research work is primarily in ethics and health policy. Dr. Veatch's books include A Theory of Medical Ethics and Case Studies in Medical Ethics. He is co-editor of the collection Ethics and Health Policy.