1. Department of Anatomy and Cell Biology University Medicine Greifswald Greifswald Germany
2. Department of Anatomy and Histology Faculty of Veterinary Medicine Assiut University Assiut Egypt
3. Nephrological Center Medical Clinic and Policlinic IV University of Munich Munich Germany
4. Department of Functional Genomics University Medicine Greifswald Greifswald Germany
5. Department of Nephropathology Institute of Pathology University Hospital Erlangen Erlangen Germany
6. Department of Internal Medicine II, Nephrology and Clinical Immunology RWTH Aachen University Hospital Aachen Germany