[1] Western Infirm & Associated Hosp, Dept Cardiol, Glasgow G12 8QQ, Lanark, Scotland
[2] Hop Beaujon, Clichy, France
[3] Franz Volhard Klin, Berlin, Germany
[4] VA Hosp, Dallas, TX USA
[5] Univ Hosp, Malmo, Sweden
[6] Dept Primary Care & Gen Practice, Birmingham, W Midlands, England
[7] Monash Univ, Alfred Hosp, Dept Epidemiol & Prevent Med, Melbourne, Vic 3181, Australia
[8] Monash Univ, Alfred Hosp, Dept Med, Melbourne, Vic 3181, Australia
[9] ANMCO, Res Ctr, Florence, Italy
[10] McMaster Univ, Div Cardiol, Hamilton, ON, Canada
[11] Case Western Reserve Univ, Cleveland, OH 44106 USA
[12] Univ Gen Hosp, Barcelona, Spain
[13] Univ Gothenburg, Sahlgrenska Acad, Sahlgrens Univ Hosp Ostra, Dept Med, Gothenburg, Sweden