1. Institute of Pharmacy and Biochemistry, Johannes Gutenberg University Mainz, Mainz, Germany
2. Respiratory Drug Delivery, Boehringer Ingelheim Pharma GmbH & Co. KG, Ingelheim am Rhein, Germany
3. Stiftung Krankenhaus Bethanien, Moers, Germany
4. Analytical Development, Boehringer Ingelheim Pharma GmbH & Co. KG, Ingelheim am Rhein, Germany