[1] Univ Geneva, Fac Med, Geneva, Switzerland
[2] Univ Hosp Geneva, Div Cardiol, Geneva, Switzerland
[3] Univ Bern, Clin Trials Unit, Bern, Switzerland
[4] Univ Lausanne, Dept Ambulatory Care & Community Med, Lausanne, Switzerland
[5] Univ Hosp Bern, Dept Cardiol, Bern, Switzerland
[6] Univ Hosp Geneva, Div Cardiol, Geneva, Switzerland
[7] Univ Lausanne Hosp, Div Clin Pharmacol, Dept Lab Med & Pathol, Lausanne, Switzerland
[8] Univ Zurich, Ctr Mol Cardiol, Zurich, Switzerland
[9] Royal Brompton & Harefield Hosp, Cardiol, London, England
[10] Imperial Coll London, London, England
[11] Univ Zurich, Univ Heart Ctr, Dept Cardiol, Zurich, Switzerland
[12] Univ Bern, Inst Primary Hlth Care BIHAM, Bern, Switzerland
[13] Univ Bern, Univ Hosp Bern, Dept Gen Internal Med, Inselspital, Bern, Switzerland