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. 2016 May 5;16:53. doi: 10.1186/s12903-016-0208-x

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© Kagereki et al. 2016

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. 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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Fig. 1 — Search strategy. The National Library of Medicine (NLM) catalogue was searched for journals published in English, indexed in PubMed and tagged with dentistry MeSH (Medical Subject Headings) words (MeSH Unique ID: D003813). Repeated entries and journals with missing volumes within the study period were excluded