[1] Geneva Univ Hosp, Geneva, Switzerland
[2] Univ Bern, Clin Trials Unit Bern, Bern, Switzerland
[3] Lausanne Univ Hosp, Dept Cardiol, Lausanne, Switzerland
[4] Univ Lausanne, CHUV, Lausanne, Switzerland
[5] Triemlispital Zurich, Zurich, Switzerland
[6] Kantonsspital Aarau, Aarau, Switzerland
[7] Kantonsspital St Gallen, St Gallen, Switzerland
[8] Univ Hosp Basel, Basel, Switzerland
[9] Cardiovasc Ctr Bern, Bern, Switzerland
[10] Bern Univ Hosp, Bern, Switzerland