1. Faculty of Chemistry, N. Copernicus University, Gagarina 7, 87‐100 Toruń, Poland, http://www.chem.uni.torun.pl/KChNiK/
2. Faculty of Biology and Environment Protection, N. Copernicus University, Lwowska 1, 87‐100 Toruń, Poland
3. L. Rydygier Collegium Medicum in Bydgoszcz, N. Copernicus University in Toruń, Karłowicza 24, 85‐067 Bydgoszcz, Poland
4. Department of Chemistry and Pharmacy, University of Erlangen‐Nürnberg, Egerlandstrasse 1, 91058 Erlangen, Germany, http://www.chemie.uni‐erlangen.de/vaneldik
5. Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30‐060 Krakow, Poland