1. Department of Neuropeptides
2. Mossakowski Medical Research Centre
3. Polish Academy of Sciences
4. 02-106 Warsaw
5. Poland
6. Institute of Biochemistry
7. Biological Research Centre
8. Hungarian Academy of Sciences
9. Szeged
10. Hungary
11. National Medicines Institute
12. 00-725 Warsaw
13. Toxicology Research Laboratory
14. Faculty of Mathematics and Natural Sciences
15. Cardinal Stefan Wyszyński University in Warsaw
16. 01-938 Warsaw