TY - BOOK AU - Mittal Ankit AU - Dr. Balkrishnan Menon Gu. AU - Prof. S. N. Gaur Gu. AU - University of Delhi. Faculty of Medical Sciences. Department of Pulmonary Medicine ED - University of Delhi. Faculty of Medical Sciences. Department of Pulmonary Medicine TI - Correlation of inflammatory markers and vitamin d levels with the severity of disease and frequency of acute exacerbations of chronic obstructive pulmonary disease PY - 2014/// KW - MEDICINE ER -