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. 2014 Jul 27;43:26. doi: 10.1186/s40463-014-0026-6

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© Graf et al. 2014

This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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The frequency of snoring after surgery (six months and two years) in comparison with snoring before surgery (Qu) rated by parents. The children reoperated with tonsil surgery are excluded in the two year follow-up.