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. 2014 Nov 29;14:894. doi: 10.1186/1471-2407-14-894

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© Ren et al.; licensee BioMed Central Ltd. 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/4.0), 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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Two nasopharyngeal applicators. (a) Nasopharyngeal intracavitary brachytherapy applicator custom designed for T1-2a patients. (b) A ProGuide Needle (189.601 ProGuide Needle Set 6 F, sharp) was used as a nasopharyngeal applicator (microSelectron, Nucletron, nylon tube technique) for stage T2b NPC patients.