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. 2018 Nov 15;19(1):110. doi: 10.1186/s10194-018-0941-4

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© The Author(s). 2018

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.

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Fig. 1 — Neuropathic pain related articles in world and in China (a) The global number of neuropathic pain publications. The blue bars indicate the quantity of neuropathic pain articles. (b) Percentage of studies from each Country/Region. (c) The time curve of neuropathic pain articles from top 7 countries. (d) The heat map showing the distribution of neuropathic pain publications in world. (e) The annual number of neuropathic pain articles in China. (f) The heat map showing the distribution of neuropathic pain publications in China