Nikolova Silviya Pavlova, Pancheva-Dimitrova Ruzha Zlatanova, Yoncheva Nikoleta, Vasileva Virginia, Cherkezova Borislava
Department of Social Medicine and Health Care Organisation, Medical University of Varna, Varna, Bulgaria.
Department of Hygiene and Epidemiology, Medical University of Varna, Varna, Bulgaria.
Front Public Health. 2022 Aug 12;10:932847. doi: 10.3389/fpubh.2022.932847. eCollection 2022.