1. Center for Integrative Research on Cognition, Learning, and Education, Washington University in St. Louis, St. Louis, MO 63130
2. Department of Chemistry, University of Utah, Salt Lake City, UT 84112
3. Department of Biological Sciences, Texas Tech University, Lubbock, TX 79409
4. Department of Biochemistry and Molecular Biology, University of Georgia, Athens, GA 30602