1. Department of Chemistry, Stanford University, 333 Campus Drive, Stanford, California 94305-5080, United States
2. Department of Pediatrics, Stanford School of Medicine, Stanford, California 94305-5427, United States
3. Molecular Imaging Program, Stanford University, Stanford, California 94305-5427, United States
4. TransDerm Inc., 2161 Delaware Avenue, Suite D, Santa Cruz, California 95060, United States
5. Thermo Fisher Scientific, Dharmacon Products, 2650 Crescent Drive, Lafayette, Colorado 80026, United States
6. Departments of Radiology, Microbiology, and Immunology, Stanford School of Medicine, Stanford, California 94305-5427, United States