1. Departments of Otorhinolaryngology, Istanbul Training and Research Hospital (Drs Alkan, Yigit, Acioglu, and Azizli) and Yeditepe University (Dr Kocak), Department of Metallurgy and Material Engineering, Faculty of Chemical-Metallurgy, Yildiz Technical University (Ms Bekem and Dr Unal), and Ministry of Justice National Forensic Institute (Dr Buyuk), Istanbul, Turkey.