1. Targetex Kft.; Kápolna köz 4/a Dunakeszi H-2120 Hungary
2. Institute of Enzymology; Research Centre for Natural Sciences; Hungarian Academy of Sciences; Magyar Tudósok körútja 2. Budapest H-1117 Hungary
3. Institute of Pharmaceutical Chemistry; University of Szeged; Eötvös u. 6. Szeged H-6720 Hungary