1. Center of Studies in Preventive Medicine, Discipline of Occupational Medicine, Department of Internal Medicine V, Victor Babes University of Medicine and Pharmacy, Eftimie Murgu Square, No. 2, 300041 Timisoara, Romania
2. Center of Studies in Preventive Medicine, Discipline of Hygiene, Department of Microbiology, Victor Babes University of Medicine and Pharmacy, Eftimie Murgu Square, No. 2, 300041 Timisoara, Romania
3. Department of Physics, Faculty of Physics, West University of Timisoara, V. Parvan Ave., No. 4, 300223 Timisoara, Romania
4. Faculty of Psychology and Educational Sciences, Spiru Haret University, Fabricii Street No. 46G, 060821 Bucharest, Romania
5. Center for Translational Research and Systems Medicine, Discipline of Public Health, Department of Functional Sciences, Victor Babes University of Medicine and Pharmacy, Eftimie Murgu Square, No. 2, 300041 Timisoara, Romania