Schüepp, KG, S Devadson, C Roller, and JH Wildhaber. “A Complementary Combination of Delivery Device and Drug Formulation for Inhalation Therapy in Preschool Children”. Swiss Medical Weekly 134, no. 1314 (April 3, 2004): 198–198. Accessed March 28, 2024. https://smw.ch/index.php/smw/article/view/360.