[1] Geneva Univ Hosp, Geneva, Switzerland
[2] Bern Univ Hosp, Inst Social & Prevent Med, Bern, Switzerland
[3] Bern Univ Hosp, Clin Trials Unit, Bern, Switzerland
[4] Geneva Univ Hosp, Cardiol, Geneva, Switzerland
[5] Triemli Hosp, Cardiol, Zurich, Switzerland
[6] Univ Hosp Ctr Vaudois CHUV, Cardiol, Lausanne, Switzerland
[7] Cantonal Hosp Aarau, Cardiol, Aarau, Switzerland
[8] Univ Fribourg, Cardiol, Fribourg, Switzerland
[9] Kantonsspital, Cardiol, St Gallen, Switzerland
[10] Univ Hosp Basel, Cardiol, Basel, Switzerland
[11] Bern Univ Hosp, Cardiol, Inselspital, Bern, Switzerland
[12] St Michaels Hosp, Toronto, ON, Canada