1. k.-k. Hofkristallamt; Vista CA USA
2. Department of Genetic Epidemiology; Medical University of Innsbruck; Austria
3. Protein Structure Section; Macromolecular Crystallography Laboratory; National Cancer Institute; Frederick MD USA
4. Department of Molecular Physiology and Biological Physics; University of Virginia; Charlottesville VA USA
5. School of Chemistry; University of Manchester; UK
6. Department of Crystallography; Faculty of Chemistry; Center for Biocrystallographic Research; Institute of Bioorganic Chemistry; Polish Academy of Sciences; Adam Mickiewicz University; Poznan Poland