1. Department of Pharmaceutical Sciences, University of Illinois at Chicago, Chicago, Illinois, USA
2. Department of Medical Microbiology and Immunology, University of Wisconsin-Madison, Madison, Wisconsin, USA
3. Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
4. University of Illinois Cancer Center, University of Illinois at Chicago, Chicago, Illinois, USA
5. Department of Chemistry & Biochemistry, University of California, Santa Cruz, California, USA