1. Centre for Research in Neuroscience, Research Institute of the McGill University Health Center, Montreal, Quebec, Canada
2. Department of Cell Biology, Physiology and Immunology, Universitat Autònoma de Barcelona, Catalonia, Spain
3. Department of Biochemistry and Molecular Biology, University of Tokyo, Tokyo, Japan
4. Department of Chemistry, University of Athens, Athens
5. Chemical Laboratories, Agricultural University of Athens, Athens, Greece
6. Department of Chemistry & Biochemistry, School of Medicine, University of California, San Diego, La Jolla, CA, USA