Khan, P. A.; Sujala, A.; Nousheen, B. B. S.; Fatima, A. F.; Ala, H. T.; Reddy, A. B. T. P. A COMPARATIVE EVALUATION OF THE EFFICACY OF TRIPLE DRUG THERAPY WITH DUAL DRUG THERAPY IN COPD PATIENTS. Int J Pharm Pharm Sci 2018, 10, 105-109.