1. Department of Medical Genetics; Istanbul University Cerrahpasa Medical School
2. Biruni University
3. Molecular Biology and Genetics Department; Erzurum Technical University (o.f.k.); Erzurum Turkey
4. Department of Otorhinolaryngology; Cerrahpasa Medical School; Istanbul University; Istanbul
5. Department of Medicine and Dan L. Duncan Cancer Center Division of Biostatistics
6. Department of Pathology and Immunology; Baylor College of Medicine; Houston Texas U.S.A.