Y.B, K., & S.Y, K. (2018). Study Of Combination Therapy With Ipratropium Bromide And Levosalbutamol In Stable Chronic Obstructive Pulmonary Disease Patients.: Ipratropium Bromide And Levosalbutamol In Stable Chronic Obstructive Pulmonary Disease Patients. National Journal of Integrated Research in Medicine, 6(3), 60–63. https://doi.org/10.70284/njirm.v6i3.914