1. The Center for Excellence in Vascular Biology, Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women’s Hospital, Boston, MA (A.L., L.S.A.P., E.A.).
2. Harvard Medical School, Boston, MA (A.L., L.S.A.P., R.A.L., E.A.).
3. Cardiac Ultrasound Laboratory, Massachusetts General Hospital, Boston, MA (R.A.L.).
4. Department of Pediatrics and Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, La Jolla (V.N.).
5. Center for Interdisciplinary Cardiovascular Sciences, Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women’s Hospital, Boston, MA (E.A.).