1. Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN, USA
2. Department of Cardiovascular Surgery, Baylor Health Care System, and Baylor Scott & White The Heart Hospital–Plano Research Center, Plano, TX, USA
3. Department of Medicine, Division of Cardiology, Columbia University Medical Center, and Center for Interventional Vascular Therapy, Columbia University, New York, NY, USA
4. Heart & Vascular Center, Geisel School of Medicine/Dartmouth Hitchcock Medical Center, Lebanon, NH, USA
5. Regatta Medical, Bannockburn, IL, USA