1. Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831
2. Department of Natural Sciences, Tennessee Wesleyan University, Athens, TN 37303, United States
3. Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, La Jolla, CA 92093-0650
4. Division of Medicinal Chemistry & Pharmacognosy, College of Pharmacy, Ohio State University, Columbus, OH 43210
5. Department of Pharmacology and Toxicology, University of Utah, Salt Lake City, UT 84112