Ilchenko, S. I., and Fialkovska A. А. “Clinical Features and Molecular Genetic Risk Factors for the Development of Chronic Bronchitis in Adolescent Smokers”. Medicni Perspektivi, vol. 24, no. 3, Nov. 2019, pp. 74-79, doi:10.26641/2307-0404.2019.3.181884.