Nazarenko KV, Opimakh SG, Polianskaja MO. Assessment of functional tests on determining resistance of respiratory tract in patients with bronchial asthma, COPD and their combination. Med. perspekt. [Internet]. 2017Oct.12 [cited 2024Nov.23];22(3):73-81. Available from: https://journals.uran.ua/index.php/2307-0404/article/view/111929