1. Departments of Dermatology, Venereology, Allergology and Immunology; Dessau Medical Center; Brandenburg Medical School Theodor Fontane; Dessau Germany
2. Department of Microbiology; Medical School; National and Kapodistrian University of Athens; Athens Greece
3. Department of Pediatric and Congenital Heart Surgery; Onassis Heart Surgery Centre; Athens Greece
4. Department of Physiology; Medical School; National and Kapodistrian University of Athens; Athens Greece
5. First Department of Medicine; Laikon Hospital; Medical School; National and Kapodistrian University of Athens; Athens Greece
6. Athens Medical Centre; Rheumatology Clinic; Athens Greece