Age appropriateness is a major concern of pulmonary delivery devices. in particular of dry powder inhalers (DPIs). since their performance strongly depends on the inspiratory flow manoeuvre of the patient. Previous research on the use of DPIs by children focused mostly on specific DPIs or single inspiratory parameters. https://www.spidertattooz.com/OMEGA-Speedmaster-Professional-Moonwatch-Co-Axial-Master-Chronometer-Chronograph-310-32-42-50-01-001-p19098/