1. Institute of Pharmaceutics and Biopharmaceutics, Martin Luther University Halle-Wittenberg, W.-Langenbeck-Straße 4, 06120 Halle, Germany
2. Institute of Applied Dermatopharmacy, Martin Luther University Halle-Wittenberg, W.-Langenbeck-Straße 4, 06120 Halle, Germany
3. Fraunhofer Institute for Mechanics of Materials, Heideallee 19, 06120 Halle, Germany
4. Institute of Pharmaceutics, Heinrich Heine University Düsseldorf, Universitätsstraße 1, 40225 Düsseldorf, Germany