Marcus C Schaub1, Hugues Abriel2. 1. Institute of Pharmacology and Toxicology, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland. Electronic address: marcus.schaub@bluewin.ch. 2. Department of Clinical Research and NCCR TransCure, Groupleader Ion Channel Research, University of Bern, Department of Clinical Research, Murtenstrasse 35, 3010 Bern, Switzerland. Electronic address: hugues.abriel@dkf.unibe.ch.