1. Division of Biology, Department of Chemistry and Materials Science, Office of Science and Engineering Laboratories, U.S. Food and Drug Administration, Silver Spring, Maryland 20993, United States
2. College of Science, George Mason University, 4400 University Drive, Fairfax, Virginia 22030, United States
3. Department of Biochemistry and Molecular Medicine, University of California, Davis, School of Medicine, Sacramento, California 95817, United States
4. Sotera Defense Solutions, Crofton, Maryland 21114, United States