1. First Department of Pathology; Medical School; University of Athens; Athens Greece
2. Department of Nephrology and Renal Transplantation Unit; Medical School; University of Athens, Laiko General Hospital; Athens Greece
3. Department of Hygiene, Epidemiology and Medical Statistics; Medical School; University of Athens; Athens Greece
4. First Department of Internal Medicine, Propaedeutic; Medical School; University of Athens, Laiko General Hospital; Athens Greece
5. Laboratory of Histology and Embryology; Medical School; University of Athens; Athens Greece
6. Institute of Cellular Medicine; Faculty of Medical Sciences; Newcastle University; Newcastle upon Tyne UK