1. Department of Chemistry & Biochemistry, George Mason University, 10920 George Mason Circle, Manassas, Virginia 20110, United States
2. Bacterial Diseases Branch, Wound Infections Department, Walter Reed Army Institute of Research, 503 Robert Grant Ave, Silver Spring, Maryland 20910, United States
3. Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of Virginia, P.O. Box 800546, Charlottesville, Virginia 22908, United States