1. Department of Chemistry and
Biochemistry, 236 Nieuwland Science Hall, University of Notre Dame, Notre Dame, Indiana 46556, United States
2. Molecular Endocrinology and
Molecular Imaging, Department of Endocrinology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA Leiden,
The Netherlands
3. Max Planck Institute for Neurological Research, Gleuelerstrasse 50, D-50931,
Cologne, Germany