1. Department of Chemistry, Stanford University, Stanford, California 94305, United States
2. Department of Radiology, Molecular Imaging Program at Stanford, Stanford University School of Medicine, Stanford, California 94305, United States
3. Department of Pathology, Stanford University School of Medicine, Stanford, California 94305, United States
4. Department of Electrical Engineering, Stanford University, Stanford, California 94305, United States
5. Department of Bioengineering, Stanford University, Stanford, California 94305, United States
6. Clinical Microbiology Laboratory, Stanford University Medical Center, Palo Alto, California 94304, United States
7. Division of Infectious Diseases and Geographic Medicine, Department of Medicine, Stanford University School of Medicine, Stanford, California 94305, United States