https://www.atsjournals.org/doi/10.1164/rccm.201805-0995OC https://www.ncbi.nlm.nih.gov/pubmed/30641027?dopt=Abstract Effect of Indacaterol/Glycopyrronium on Pulmonary Perfusion and Ventilation in Hyperinflated COPD Patients (CLAIM): A Double-Blind, Randomised, Crossover Trial. Effect of Indacaterol/Glycopyrronium on Pulmonary Perfusion and Ventilation in Hyperinflated COPD Patients (CLAIM): A Double-Blind, Randomised, Crossover Trial. Am J Respir Crit Care Med. 2019 Jan 14;: Authors: Vogel-Claussen J, Schönfeld CO, Kaireit TF, Voskrebenzev […]