Submitted on: 29 April 2016.
Revised on: 15 July 2016.
Accepted on: 13 August 2016.
___________________European Annals of Otorhinolaryngology-Head and Neck Diseases
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Submitted on: 31 December 2005.
Revised on: 20 March 2006.
Accepted on: 07 May 2006.
___________________European Annals of Otorhinolaryngology-Head and Neck Diseases
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Submitted on: 09 November 2008.
Revised on: 27 February 2009.
Accepted on: 26 March 2009.
___________________European Annals of Otorhinolaryngology-Head and Neck Diseases
Submitted on: 06 February 2013.
Revised on: 05 May 2013.
Accepted on: 20 June 2013.
___________________European Annals of Otorhinolaryngology-Head and Neck Diseases
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Submitted on: 22 July 2004.
Revised on: 01 October 2004.
Accepted on: 16 November 2004.
___________________European Annals of Otorhinolaryngology-Head and Neck Diseases