[1] Azienda Osped Univ Pisana, Pisa, Italy
[2] Massachusetts Gen Hosp, Boston, MA 02114 USA
[3] Baim Inst Clin Res, Boston, MA USA
[4] Fdn Toscana Gabriele Monasterio, Pisa, Italy
[5] Ist Ric Farmacol Mario Negri, IRCCS, Dept Cardiovasc Res, Milan, Italy
[6] Univ Minnesota, Div Cardiovasc Med, Minneapolis, MN USA
[7] Oslo Univ Hosp, Dept Cardiol, Oslo, Norway
[8] Oslo Univ Hosp, Internal Med Res Inst, Oslo, Norway
[9] Maastricht Univ, Med Ctr, Dept Cardiol, Maastricht, Netherlands
[10] Hosp Badalona Germans Trias & Pujol, Badalona, Spain
[11] Univ Med Ctr Groningen, Groningen, Netherlands
[12] Fukushima Med Univ, Dept Cardiovasc Med, Fukushima, Japan
[13] Rigshosp, Dept Cardiol, Copenhagen Univ Hosp, Copenhagen, Denmark