1. University of Medicine and Pharmacy Bucharest; Faculty of Pharmacy, Department of Analytical Chemistry; Traian Vuia Street 6; Bucharest; 020956; Romania
2. Bioanalytical Laboratory; SC Labormed Pharma SA; 44B Th. Pallady Blvd; Bucharest; 032266; Romania
3. University of Bucharest; Faculty of Chemistry, Department of Analytical Chemistry; 90 Panduri Ave; Bucharest; 050663; Romania