Kumar Ratre, Bhupendra, et al. “Estimation and Comparison of Pro-BNP Level in Patient With Heart Failure Due to COPD and LV Dysfunction”. Biomedical Review: Journal of Basic and Applied Medical Sciences, vol. 1, no. 1, Dec. 2023, pp. 4-10, https://biomedicalreview.in/index.php/jbams/article/view/2.