1. Faculty of Dental Medicine, “Titu Maiorescu” University of Bucharest, 031593 Bucharest, Romania
2. Department of Marketing and Medical Technology, University of Medicine and Pharmacy “Carol Davila” Bucharest, 020021 Bucharest, Romania
3. Emergency Clinical Hospital Dr. Bagdasar-Arseni, Șoseaua Berceni 12, 041915 Bucharest, Romania
4. Faculty of Sciences, Physical Education and Informatics, University of Pitesti, Târgul din Vale 1, 110040 Arges, Romania
5. Department of Public Health Arges, Exercitiu 39 bis, 110438 Arges, Romania