- Correspondence to Professor Dr Olivier M Vanderveken, Department of Otolaryngology and Head and Neck Surgery, Antwerp University Hospital, Wilrijkstraat 10, Edegem B-2650, Antwerp, Belgium;
- Received March 12, 2012
- Revised August 13, 2012
- Accepted August 24, 2012
- First published September 19, 2012.
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