Norderud Lærum, Birger, Gunilla Telg, and Georgios Stratelis. “Need of Education for Dry Powder Inhaler Storage and Retention – a Patient-Reported Survey”. Multidisciplinary Respiratory Medicine 11, no. 1 (June 8, 2016). Accessed April 25, 2026. https://mrmjournal.org/index.php/mrm/article/view/314.