1. Research Center Pharmaceutical Engineering (RCPE) GmbH, Graz 8010, Austria
2. Austrian Centre for Electron Microscopy and Nanoanalysis (FELMI-ZFE), Graz 8010, Austria
3. Hosokawa Micron B.V., Doetinchem 7005 BL, Netherlands
4. Novartis Pharma AG, Basel 4056, Switzerland
5. Graz University of Technology, Institute for Process and Particle Engineering, Graz 8010, Austria