TOS Keyword: TOS 1 Question Articles Volume 5, Issue 3Effect of smoking status, disease severity, exacerbations on Oxidative stress and hs-CRP levels in Chronic Obstructive Pulmonary Disease A. Sharma, J. Singh, N.C. Kajal, B. Malhotra, M. Chandey, S.S. Kamboj, M. Kaur August 4, 2016 Health sciences Antioxidants, hs-CRP, smoking, TAC, TOS,