Authors
Maria Bondar
MI «Zaporozhye Primary Health Care Center N, Zaporizhzhia, Ukraine
Suren Varzhapetian
Zaporizhzhya Medical Academy of Postgraduate Education
© 2020 Tatyana Strohonova, Maria Bondar, Suren Varzhapetian, published by Grupul de Econometrie Aplicata
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.