1. Faculty of Medicine, Institute of Histology and Embryology, University of Beograd Beograd Serbia
2. Department of Molecular Pathology, Institute of General and Molecular Pathology, Tartu University Tartu Estonia
3. Division of Molecular Pathology, Institute of Medical and Veterinary Science and The Hanson Institute, and School of Medicine, University of Adelaide Adelaide South Australia Australia
4. Center for Structural and Cell Biology in Medicine, Institute of Anatomy, University Lübeck Lübeck Germany