IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-9-11-32096 Original Research Paper NEUTROPHIL TO LYMPHOCYTE RATIO AS A MARKER OF ACUTE EXACERBATION AND DISEASE SEVERITY IN CHRONIC OBSTRUCTIVE PULMONARY DISEASE A.YOGALAKSHMEE Dr. Dr. PRIYANKA Dr. November 2020 9 11 01 02