1. Chemistry
Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K.
2. Division
of Nuclear Medicine and Molecular Imaging, Massachusetts General Hospital, 55 Fruit Street, Boston 02114, United States
3. Department
of Radiology, Harvard Medical School, 55 Fruit Street, Boston 02114, United States
4. Advion BioSystems, 10
Brown Road, Suite 101, Ithaca, New York 14850, United States