1. Doctoral School of Biomedical Sciences, Faculty of Medicine and Pharmacy, University of Oradea, P-ta 1 Decembrie 10, 410087 Oradea, Romania
2. Faculty of Environmental Protection, University of Oradea, 26 Gen. Magheru Street, 410048 Oradea, Romania
3. INCDO-INOE 2000 Subsidiary Research Institute for Analytical Instrumentation ICIA, 67 Donath Street, 400293 Cluj-Napoca, Romania
4. Faculty of Medicine and Pharmacy, University of Oradea, P-ta 1 Decembrie 10, 410087 Oradea, Romania