[1] Univ Hull, Castle Hill Hosp, Dept Cardiol, Kingston Upon Hull HU16 5JQ, Yorks, England
[2] Hop Beaujon, Dept Cardiol, Clichy, France
[3] Hosp La Fe, E-46009 Valencia, Spain
[4] Humboldt Univ, Max Delbruck Centrum, Franz Volhard Klin, Berlin, Germany
[5] Univ Birmingham, Dept Primary Care & Gen Practice, Birmingham, W Midlands, England
[6] Univ Zurich Hosp, CH-8091 Zurich, Switzerland
[7] Osped Riuniti Bergamo, Unita Operat Cardiol, Dipartimento Cardiovasc, I-24100 Bergamo, Italy
[8] Univ Groningen, Dept Clin Pharmacol, Groningen, Netherlands
[9] Natl Inst Cardiol, Warsaw, Poland
[10] Fac Med Lisbon, Cadeira Med 3, Lisbon, Portugal
[11] Semmelweis Univ, Dept Cardiol & Internal Med, Budapest, Hungary
[12] Sahlgrens Univ Hosp, Dept Med, S-41345 Gothenburg, Sweden
[13] Postgrad Med Sch, Dept Cardiol, Prague, Czech Republic