1. University of Arkansas at Little Rock; Applied Science Department, Nanotechnology Center; Little Rock; AR; 72204; USA
2. University of Medicine and Pharmacy ‘Iuliu Hatieganu’; Surgery Clinic III; Cluj-Napoca; 3400; Romania
3. University of Arkansas at Little Rock; Chemistry Department; Little Rock; AR; 72204; USA
4. National Institute for Research and Development of Isotopic and Molecular Technologies; PO Box 700; R-400293; Cluj-Napoca; Romania
5. National Center for Toxicological Research; Food and Drug Administration; 3900 NCTR Road; Jefferson; AR; 72079; USA