1. Department of Pathology 2, University Hospital, Linköping, Sweden, (current address: Department of Pathology, The Gade Institute, Haukeland University Hospital, Bergen, Norway);,
2. Department of Anatomic Pathology, Hospital Clinic Villaroel, Barcelona, Spain,
3. Institute of Pathology, Faculty of Medicine, Ljubljana;,
4. Slovenian Academy of Science and Arts, Ljubljana, Slovenia,
5. Department of Histopathology, University College London Medical School, London, UK