1. ABX Advanced Biochemical Compounds Biomedizinische Forschungsreagenzien GmbH Heinrich-Glaeser-Strasse 10–14 D-01454 Radeberg Germany
2. Department of Pharmacological Chemistry University of Debrecen, Health and Medical Center P. O. Box 70 H-4010 Debrecen Hungary
3. Institute of Basic Medical Sciences University of Oslo P. O. Box 1105, Blindern N-0317 Oslo Norway
4. Norwegian Medical Cyclotron Centre Ltd. Sognsvannsveien 20 N-0372 Oslo Norway
5. Institute of Physics University of Oslo Sem Sælands vei 24 N-0371 Oslo Norway
6. Department of Nuclear Medicine Bern University Hospital Freiburgstraße 18 3010 Bern Switzerland
7. School of Psychology and Counselling Queensland University of Technology Brisbane Australia
8. Department of Organic Chemistry University of Debrecen P. O. Box 20 H-4010 Debrecen Hungary
9. Royal Institute of Technology (KTH) School of Engineering Sciences in Chemistry Biotechnology and Health Department of Chemistry Organic Chemistry S-100 44 Stockholm Sweden