1. Department of Chemistry and Biochemistry University of South Carolina Columbia South Carolina USA
2. Solomon H. Snyder Department of Neuroscience The Johns Hopkins University School of Medicine Baltimore Maryland USA
3. Department of Mathematics and Statistics Southern Illinois University Edwardsville Edwardsville Illinois USA
4. Department of Statistics University of South Carolina Columbia South Carolina USA
5. Department of Biology Duke University Durham North Carolina USA
6. Department of Mathematics Duke University Durham North Carolina USA
7. Department of Mathematics The Ohio State University Columbus Ohio USA