Authors
Department of Dental, Oral and Maxillofacial Surgery, Faculty of Dental Medicine, Medical University – Sofia, Bulgaria
V. Kirkov
Department of Health Policy and Management, Faculty of Public Health, “Prof. Dr. Tzecomir Vodenitcharov”, Medical University – Sofia, Bulgaria
Z. Pashova-Tasseva
Department of Periodontology, Faculty of Dental Medicine, Medical University – Sofia, Bulgaria
J. Kirilova
Department of Conservative Dentistry, Faculty of Dental Medicine, Medical University – Sofia, Bulgaria