1. Department of Medical and Clinical Biophysics, Faculty of Medicine, P. J. Šafárik University in Košice, Trieda SNP 1, 04011 Košice, Slovakia
2. Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, DK-5230, Odense M, Denmark
3. Department of Chemistry, Faculty of Science, Helwan University, 11795 Ain Helwan, Cairo, Egypt
4. Universite Paris-Sud, CNRS, Faculte de Pharmacie, 5 rue J.-B. Clement, Chatenay-Malabry, 92296 France