1. Johns Hopkins Drug Discovery, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, United States
2. Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, United States
3. Department of Pharmacology and Neuroscience, University of North Texas Health Science Center, Fort Worth, Texas 76107, United States
4. Department of Cell and Molecular Physiology, Stritch School of Medicine, Loyola University Chicago, Maywood, Illinois 60153, United States
5. Department of Chemistry, The Johns Hopkins University, Baltimore, Maryland 21218, United States
6. School of Life Sciences, Arizona State University, Tempe, Arizona 85287, United States
7. Department of Radiology, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States