1. Laboratory of Cell Physiology, Institute of Neuroscience; Université catholique de Louvain; av. Mounier, B1.53.17 B-1200 Brussels Belgium
2. Centre de Génétique et de Physiologie Cellulaire et Moléculaire; Université Claude Bernard Lyon 1; CNRS, UMR 5534 69622 Villeurbanne France
3. Department of Molecular Physiology; National Cardiovascular Center Research Institute Suita; Osaka 565-8565 Japan
4. Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine; Katholiek Universiteit Leuven; B-3000 Leuven Belgium