1. Department of Solid State Chemistry, University of Chemistry and Technology, Technicka 5, 166 28 Prague 6, Czech Republic
2. Teva Pharmaceuticals CR, s.r.o., Branisovska 31, 370 05 Ceske Budejovice, Czech Republic
3. Department of Structural Analysis, Institute of Physics of the Czech Academy of Sciences, Na Slovance 2, Praha 8, 182 21, Czech Republic
4. ESRF, The European Synchrotron, CS40220, F-38043 Grenoble Cedex 9, France
5. Department of NMR Spectroscopy, Institute of Macromolecular Chemistry CAS, Heyrovsky sq. 2, 162 06 Prague 6, Czech Republic