O. O. Otchych Ivan Franko National University of Lviv Ukraine
K. D. Mazhak https://orcid.org/0000-0001-7776-8892 Lviv Research Institute of Epidemiology and Hygiene Ukraine
D. I. Sanagurskyi https://orcid.org/0000-0002-8998-7117 Ivan Franko National University of Lviv Ukraine