1. Molecular Medicine Center; Medical University-Sofia; Sofia Bulgaria
2. Department of Clinical Laboratory and Clinical Immunology and Department of Nephrology; Medical University-Sofia; Sofia Bulgaria
3. National Genetic Laboratory; Majchin Dom Hospital; Sofia Bulgaria
4. Hôpitaux Drome Nord; Romans-sur-Isère France
5. Department of Medical Chemistry and Biochemistry; Medical University-Sofia; Sofia Bulgaria
6. Department of Dermatology and Venereology; Medical University-Sofia; Sofia Bulgaria