Sari, Astari Pranindya, Ratnawati Ratnawati, Wahju Aniwidyaningsih, Sita Laksmi Andarini, and Faisal Yunus. “Neutrophyl – Lymphocyte Ratio (NLR) and C-Reactive Protein (CRP) Levels in Stable and Exacerbated Chronic Obstructive Pulmonary Disease (COPD) Patients in Persahabatan Hospital Jakarta”. Respiratory Science 2, no. 2 (February 28, 2022): 78-91. Accessed April 17, 2026. https://respiratoryscience.or.id/index.php/journal/article/view/38.