[1] Hosp Weezenlanden, Isala Klinieken, NL-8011 JW Zwolle, Netherlands
[2] Cardiovasc Res Fdn, Lenox Hill Hosp, New York, NY USA
[3] Vasc Inst, New York, NY USA
[4] Careggi Hosp, Div Cardiol, Florence, Italy
[5] Duke Clin Res Inst, Durham, NC USA
[6] Tech Univ Munich, Med Klin, D-8000 Munich, Germany
[7] Univ Hosp Gasthuisberg, Dept Cardiol, B-3000 Louvain, Belgium
[8] Brigham & Womens Hosp, Div Cardiovasc, Boston, MA 02115 USA
[9] Cleveland Clin Fdn, Cleveland, OH 44195 USA