“CORRELATION BETWEEN CARDIAC ARRHYTHMIA AND THE LEVEL OF HYPOXEMIA ON THE SEVERITY OF CHRONIC OBSTRUCTIVE PULMONARY DISEASE”. European Journal of Interdisciplinary Research and Development 11 (January 9, 2023): 13–16. Accessed July 16, 2025. https://ejird.journalspark.org/index.php/ejird/article/view/296.