Ivchuk, V. V., Kopteva, T. Y. and Kovalchuk, T. A. (2018) “Characteristics of sputum cellular composition in patients with chronic obstructive pulmonary disease of professional etiology”., Medicni perspektivi, 23(3(part1), pp. 88–94. doi: 10.26641/2307-0404.2018.3(part1).142342.