1. Chemische Fabrik Budenheim KG, Budenheim, Germany
2. Department of Pharmaceutical Technology, Faculty of Pharmacy, Medical University of Gdansk, Gdansk, Poland
3. Physiolution Polska sp. z o.o., Wroclaw, Poland
4. Physiolution GmbH, Greifswald, Germany
5. Department of Drug Form Technology, Faculty of Pharmacy, Wroclaw Medical University, Wroclaw, Poland