1. Department of Drug Discovery and Biomedical Sciences, Medical University of South Carolina, Charleston, South Carolina.
2. Ralph H. Johnson Veterans Administration Medical Center, Charleston, South Carolina.
3. Department of Neurosciences, Medical University of South Carolina, Charleston, South Carolina.
4. Department of Health Sciences and Research, Medical University of South Carolina, Charleston, South Carolina.
5. Center for Biomedical Imaging, Medical University of South Carolina, Charleston, South Carolina.