[1] Populat Hlth Res Inst, Hamilton, ON, Canada
[2] Univ Hosp Basel, Dept Med, Div Cardiol, Basel, Switzerland
[3] Univ Hosp Base, Cardiovasc Res Inst Basel, Cardiol Div, Basel, Switzerland
[4] Univ Bern, Inst Primary Hlth Care BIHAM, Bern, Switzerland
[5] Hosp San Giovanni, Div Cardiol, Bellinzona, Switzerland
[6] Lucerne Cantonal Hosp, Div Cardiol, Luzern, Switzerland
[7] Lugano Reg Hosp, Div Cardiol, Lugano, Switzerland
[8] Univ Hosp Basel, Dept Neurol, Basel, Switzerland
[9] Univ Hosp Basel, Stroke Ctr, Basel, Switzerland
[10] Cantonal Hosp Baden, Dept Med, Baden, Switzerland