1. Crump Institute for Molecular Imaging, University of California Los Angeles (UCLA), Los Angeles, CA, USA
2. Department of Molecular & Medical Pharmacology, UCLA, Los Angeles, CA, USA
3. Physics and Biology in Medicine Interdepartmental Graduate Program, UCLA, Los Angeles, CA, USA
4. Center for Radiopharmaceutical Sciences, Institute of Pharmaceutical Sciences, Department of Chemistry and Applied Biosciences, ETH Zurich, Zurich, Switzerland