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. 2016 May 3;1:3. doi: 10.1186/s41073-016-0008-5

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© The Author(s) 2016

Open Access This 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 — The 2014 citation network for the Narayan paper. Node names have been replaced by dots. Every nodestands for a paper. Every arrowstands for a citation relation. The arrowpoints from the citing paper to the paper that is being cited. The Narayan paper is represented by the blue circle with the N inside