[1] McMaster Univ, Populat Hlth Res Inst, Hamilton, ON L8L 2X2, Canada
[2] Univ Politecn Marche, Clin Cardiol, Ancona, Italy
[3] Med Univ S Carolina, Charleston, SC USA
[4] Loreto Mare, Dept Cardiol, Naples, Italy
[5] Univ Hong Kong, Queen Mary Hosp, Dept Med, Hong Kong, Hong Kong, Peoples R China
[6] Univ Groningen, Univ Med Ctr Groningen, Groningen, Netherlands
[7] Goethe Univ Frankfurt, D-60054 Frankfurt, Germany
[8] St Jude Med, Sylmar, CA USA
[9] Clin Sud Luxembourg, Arlon, Belgium
[10] Evangel Hosp Bielefeld, Dept Med, Div Cardiol, Bielefeld, Germany