Mohd Irfan Ali Khan, et al. “COMPARATIVE EFFICACY AND ADVERSE EFFECTS OF INDACATEROL-GLYCOPYRRONIUM VS. SALMETEROL-FLUTICASONE IN COPD MANAGEMENT: A RANDOMIZED CONTROLLED TRIAL”. Journal of Population Therapeutics and Clinical Pharmacology, vol. 30, no. 18, Oct. 2023, pp. 579-86, https://doi.org/10.53555/jptcp.v30i18.3076.