1. Cellular Pathology Southmead Hospital North Bristol NHS Trust Bristol UK
2. Department of Histopathology Nuffield Orthopaedic Centre Oxford UK
3. Department of Pathology Faculty of Medicine in Plzen Charles University Plzen Czech Republic
4. Biomedical Center Faculty of Medicine in Plzen Charles University Plzen Czech Republic
5. Bioptical Laboratory, Ltd Plzen Czech Republic