1. Communal Service of the Municipality of Bar , Montenegro
2. University Clinical Center of Serbia , Center for Medical Biochemistry , Belgrade , Serbia
3. University of Zagreb, Faculty of Veterinary Medicine , Internal Diseases Clinic, Laboratory of Proteomics , Zagreb , Croatia
4. University of Belgrade , Faculty of Veterinary Medicine , Belgrade , Serbia
5. University of Kragujevac , Faculty of Medical Sciences , Kragujevac , Serbia