1. Department of Neuroscience, High Throughput Biology Center and Johns Hopkins Ion Channel Center, School of Medicine, Johns Hopkins University, 733 North Broadway, Baltimore, Maryland 21205, United States
2. Vanderbilt Specialized Chemistry Center, Department of Pharmacology, Vanderbilt Center for Neuroscience Drug Discovery, Vanderbilt University Medical Center, Nashville, Tennessee 37232, United States
3. Department of Physiology and Biophysics, Rosalind Franklin University of Medicine and Science, North Chicago, Ilinois 60064, United States