Baskent University Faculty of Medicine Department of Otorhinolaryngology, Ankara, Turkey & Head and Neck Surgery
2.Baskent University Faculty of Medicine Department of Otorhinolaryngology, Ankara, Turkey
3.Baskent University Faculty of Medicine Department of Anaesthesiology
4.Baskent University Faculty of Medicine Department of Cardiovascular Surgery
5.Baskent University Faculty of Medicine Department of Biostatistics