1. Dr. Mulcahy is with RAND Corporation, Arlington, Virginia. Dr. Normand is with the Department of Health Care Policy, Harvard Medical School, and with the Department of Biostatistics, Harvard T. H. Chan School of Public Health, Boston. Dr. Newcomer is with the Department of Integrated Medical Sciences, Charles E. Schmidt College of Medicine, Florida Atlantic University, Boca Raton. Mr. Colaiaco is with the Allegheny Health Network, Pittsburgh. Dr. Keeler is with RAND Corporation, Santa Monica, California,...