1. Richard A. and Susan F. Smith Center for Outcomes Research in Cardiology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA (D.B.K.).
2. Cardiovascular Research Foundation, New York, NY and St. Francis Hospital, Roslyn, NY (D.J.C.).
3. Moritz College of Law and College of Public Health, The Ohio State University, Columbus (E.P.).