1. Faculty of Medicine, Titu Maiorescu University, Bucharest, Romania;
2. Center for Military Medical Scientific Research, Bucharest, Romania;
3. Faculty of General Nursing, Bioterra University, Bucharest, Romania;
4. Clinical Hospital Colentina, Bucharest, Romania;
5. Faculty of Dental Medicine, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania;
6. Neolife Clinic, Bucharest, Romania;
7. Faculty of Sciences, University of Pitesti, Pitesti, Romania