Document Type : Letter(s) to the Editor
Authors
1 Department of General Surgery, Tehran University of Medical Sciences, IR, Iran
2 Deparment of Otorhynolaryngology, Tehran University of Medical Sciences, IR, Iran
3 Hearing Research Center, Amir Aalam Hospital, Saadi Ave, Tehran, Iran. Post Code: 11457
4 Department of Otorhynolaryngology, Tabriz University of Medical Sciences, Iran
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