1. Molecular
Imaging Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, United States
2. Laboratory
of Molecular Biology, Center for Cancer Research, National Cancer
Institute, National Institutes of Health, Bethesda, Maryland 20892, United States
3. Applied/Developmental
Research Directorate, Leidos Biomedical Research Inc., Frederick National Laboratory, Frederick, Maryland 21702, United States
4. Nuclear
Medicine Department, Warren Grant Magnuson Clinical Center, Radiology
and Imaging Science, Warren Grant Magnuson Clinical Center, National Institutes of Health, Bethesda, Maryland 20892, United States