1. Center for the Investigation of Membrane Excitability Diseases, and Department of Cell Biology and Physiology Washington University School of Medicine St. Louis MO USA
2. Center for Advanced Biotechnology and Medicine, and Departments of Pharmacology and Medicine, Robert Wood Johnson Medical School Rutgers University Piscataway NJ USA
3. Department of Pharmacology Medical University of Innsbruck Innsbruck Austria
4. Program in Physical Therapy, Departments of Orthopaedic Surgery, Neurology and Biomedical Engineering Washington University School of Medicine St. Louis MO USA