1. Department of Angiology, University Hospital Leipzig, Germany (D.S.).
2. GVM Care and Research, Maria Cecilia Hospital, Cotignola, Italy (A.M.).
3. Division of Angiology, Medical University, Graz, Austria (M.B.).
4. RoMed Klinikum, Rosenheim, Germany (G.T.).
5. Imelda Hospital, Bonheiden, Belgium (P.P.).
6. Massachusetts General Hospital, Boston (M.R.J.).
7. Medtronic, Santa Rosa, CA (H.W.).
8. Medtronic, Bakken Research Center, BV, Maastricht, the Netherlands (R.S.).
9. Universitäts-Herzzentrum Freiburg – Bad Krozingen, Bad Krozingen, Germany (T.Z.).