1. Université de Nantes, CNRS, Inserm, CRCINA, F-44000 Nantes, France
2. Center for Molecular Modeling, Division of Computational Bioscience, Center for Information Technology, National Institutes of Health, Bethesda, MD 20892, USA
3. Univ. Brest, UMR CNRS 6521 CEMCA, 6 Avenue Victor Le Gorgeu, 29200, Brest, France
4. Positron Emission Tomography Department, Warren Grant Magnuson Clinical Center, National Institutes of Health, Bethesda, Maryland, USA
5. Center for Bio/Molecular Science and Engineering, Code 6900, U.S. Naval Research Laboratory, Washington, DC, 20375, USA
6. Center for Cancer Research, National Cancer Institute, Building 10, Room B3B69, Bethesda, MD 20892, USA