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. 2020 Feb 14;20:129. doi: 10.1186/s12889-020-8251-6

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© The Author(s). 2020

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. 2 — Number of review articles on loneliness and social isolation interventions published from 1984 to 2018. The first review of loneliness and social isolation interventions appeared in 1984 and following that, there were three more reviews up until the year 2003. There were more frequent publications of reviews on loneliness and/or social isolation from 2010 onwards