K. Garnepudi, I. Shravanthi, K. Sivakumar, M. Sharma M, and K. Manasa, “A COST-EFFECTIVE ANALYSIS OF TIOTROPIUM WITH FORMOTEROL AND BUDESONIDE WITH FORMOTEROL BASED ON EFFICACY AND QUALITY OF LIFE IN CHRONIC OBSTRUCTIVE PULMONARY DISEASE PATIENTS”, Asian J Pharm Clin Res, vol. 11, no. 11, pp. 348–351, Nov. 2018.