Devi M, Kavitha, Sarumathy S, Sarath Lal Sasidharan, Sarumathy S, Mehanaz Shaik, Gottimukkala Sandeep, Sarath Lal Sasidharan, Vunnam Rajasekhar, Mehanaz Shaik, Damodharan N, Gottimukkala Sandeep, Vunnam Rajasekhar, and Damodharan N. 2018. “A CLINICAL STUDY ON SAFETY AND EFFICACY OF FORMOTEROL AND TIOTROPIUM COMBINATION COMPARED TO FORMOTEROL AND TIOTROPIUM WITH ROFLUMILAST COMBINATION IN TREATMENT OF MODERATE TO SEVERE CHRONIC OBSTRUCTIVE PULMONARY DISEASE PATIENTS”. Asian Journal of Pharmaceutical and Clinical Research 11 (3):184-86. https://doi.org/10.22159/ajpcr.2018.v11i3.21871.