[1] Univ Zurich, Ctr Mol Cardiol, Schlieren, Switzerland
[2] Cantonal Hosp Baden, Dept Internal Med, Baden, Switzerland
[3] Univ Calif San Francisco, Gladstone Inst Neurol Dis, San Francisco, CA 94143 USA
[4] Karolinska Inst, Div Cardiol, Dept Med, Stockholm, Sweden
[5] Univ Genoa, Dept Internal Med, Genoa, Italy
[6] Univ Hosp Zurich, Dept Clin Pharmacol & Toxicol, Zurich, Switzerland