[1] Univ Milan, Med Clin, Osped San Gerardo, I-20052 Milan, Italy
[2] Univ Hosp, Dept Publ Hlth, Ghent, Belgium
[3] Univ Glasgow, Glasgow, Lanark, Scotland
[4] Inst Expt Clin Med, Prague, Czech Republic
[5] Catholic Univ Louvain, B-3000 Louvain, Belgium
[6] Univ Roma La Sapienza, Rome, Italy
[7] Univ Milan, San Gerardo Hosp, Policlin Umberto I, Milan, Italy
[8] Univ Manchester, Manchester, Lancs, England
[9] Ullevaal Univ Hosp, Oslo, Norway
[10] Hosp Europeen Georges Pompidou, Dept Pharmacol, Paris, France
[11] Med Univ Gdansk, Dept Hypertens & Diabetol, Gdansk, Poland
[12] Hosp 12 Octubre, E-28041 Madrid, Spain
[13] Med Univ Gdansk, Dept Cardiol, Gdansk, Poland
[14] Univ Erlangen Nurnberg, Med Klin, Erlangen, Germany
[15] Univ Limburg, Dept Pharmacol, NL-6200 MD Maastricht, Netherlands
[16] Univ Milan, Ist Auxol Italiano, Milan, Italy