mohammad hossein baradaranfar department of otolaryngology, head and neck surgery, shahid sadoughi university of medical sciences, yazd, iran. saeid atighechi department of otolaryngology, head and neck surgery, shahid sadoughi university of medical sciences, yazd, iran. mohammad hossein dadgarnia department of otolaryngology, head and neck surgery, shahid sadoughi university of medical sciences, yazd, iran. rozita jafari department of otolaryngology, head and neck surgery, shahid sadoughi university of medical sciences, yazd, iran ghasem karimi department of otolaryngology, head and neck surgery, shahid sadoughi university of medical sciences, yazd, iran. abolfazl mollasadeghi department of audiology, shahid sadoughi university of medical sciences, yazd, iran.

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