1. Department of Biomedical Informatics, University of Utah, 421 Wakara, Salt Lake City, UT 84108, USA
2. Department of Chemistry, University of Utah, Salt Lake City, UT 84112, USA
3. Departments of Bioengineering and Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City, UT 84112, USA
4. Utah Center for Nanomedicine, Nano Institute of Utah, University of Utah, Salt Lake City, UT 84112, USA