About this article
Published Online: May 05, 2021
Page range: 53 - 58
Received: Sep 13, 2019
Accepted: Oct 05, 2019
DOI: https://doi.org/10.2478/amb-2021-0008
Keywords
© 2021 S. Angelova et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Angelova, S.
Department of Epidemiology, Medical University – SofiaBulgaria
Mitova, Y.
Department of Epidemiology, Medical University – SofiaBulgaria
Doycheva, V.
Department of Epidemiology, Medical University – SofiaBulgaria