Sari, A. P. .; Ratnawati, R.; Aniwidyaningsih, W. .; Andarini, S. L. .; Yunus, F. . Neutrophyl – Lymphocyte Ratio (NLR) and C-Reactive Protein (CRP) Levels in Stable and Exacerbated Chronic Obstructive Pulmonary Disease (COPD) Patients in Persahabatan Hospital Jakarta. Respir Scie 2022, 2, 78-91.