1. Department of Orthopedics and Traumatology , Medical University Sofia, Sofia 1431, Bulgaria
2. Department of Pediatric Orthopaedics and Hand Surgery , University Hospital of Orthopedics “Prof.B. Boichev”, Sofia, Bulgaria
3. Department of Medical Chemistry and Biochemistry, Medical Faculty , Molecular Medicine Center, , Sofia 1431, Bulgaria
4. Medical University Sofia , Molecular Medicine Center, , Sofia 1431, Bulgaria
5. Laboratory of Genomic Diagnostics, Department of Medical Chemistry and Biochemistry , Medical Faculty, , Sofia 1431, Bulgaria
6. Medical University Sofia , Medical Faculty, , Sofia 1431, Bulgaria