Christian Gessner, Frederik Trinkmann, Sanaz Bahari Javan, Raimund Hövelmann, Valentina Bogoevska, George Georges, Elena Nudo, and Carl-Peter Criée

Effectiveness of Extrafine Single Inhaler Triple Therapy in Chronic Obstructive Pulmonary Disease (COPD) in Germany – The TriOptimize Study
Int J Chron Obstruct Pulmon Dis. 2022; 17: 3019–3031. Published online 2022 Dec 2. doi: 10.2147/COPD.S382405
https://doi.org/10.2147/COPD.S382405