THE RELATION BETWEEN CLINICAL SIGNS, PARAMETERS OF HEART RATE VARIABILITY AND FUNCTION OF EXTERNAL BREATHING IN THE PATIENT WITH CHRONIC OBSTRUCTIVE PULMONARY DISEASE BEFORE AND AFTER THERAPY. J. V. N. Karazin Khark. Nat. Univ., Ser. Med. [Internet]. 2015 Jul. 4 [cited 2026 Oct. 25];(11):58-62. Available from: https://periodicals.karazin.ua/medicine/article/view/7147