1. Nazareth Cardiology, Philadelphia, PA (F.V.).
2. AMSTAT Consulting, LLC, Bethesda, MD (A.E.K.U., J.R.).
3. Division of Cardiovascular Medicine, Department of Medicine, University of Pennsylvania, Philadelphia (M.G.F.).
4. Division of Cardiovascular Sciences, University of South Florida Morsani College of Medicine, Tampa (X.P.).
5. Department of Health Policy, London School of Economics and Political Science, United Kingdom (R.F.).