[1] Department of Otolaryngology-Head & Neck Surgery,
[2] Hacettepe University Faculty of Medicine,undefined
[3] Ankara,undefined
[4] Turkey,undefined
[5] Department of Thoracic and Cardiovascular Surgery,undefined
[6] Hacettepe University Faculty of Medicine,undefined
[7] Ankara,undefined
[8] Turkey,undefined
[9] Department of Pathology,undefined
[10] Hacettepe University Faculty of Medicine,undefined
[11] Ankara,undefined
[12] Turkey,undefined
[13] 12 Sokak No: 8-7,undefined
[14] 06490 Bahçelievler,undefined
[15] Ankara,undefined
[16] Turkey e-mail: taneryilmaz@yahoo.com,undefined
[17] Tel.: +90-312-2120389,undefined
[18] Fax: +90-312-4686268,undefined