1. Clinical Trials Center, Cardiovascular Research Foundation; New York City New York
2. Center for Interventional Vascular Therapy, Division of Cardiology; New York-Presbyterian Hospital/Columbia University Medical Center; New York City
3. Department of Cardiovascular Medicine; Mayo Clinic College of Medicine and Science; Rochester Minnesota
4. The Zena and Michael A. Wiener Cardiovascular Institute, Icahn School of Medicine at Mount Sinai; New York City New York