1. Center for the Investigation of Membrane Excitability Diseases, Washington University School of Medicine, St. Louis, MO 63110, USA
2. Departments of Cell Biology and Physiology, Washington University School of Medicine, St. Louis, MO 63110, USA
3. Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
4. Neurology, Washington University School of Medicine, St. Louis, MO 63110, USA