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. 2013 Oct 4;4:667. doi: 10.3389/fpsyg.2013.00667

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Copyright © 2013 Feinberg and Mallatt.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

PMC Copyright notice

Various types of nociceptors found across different species. From Figure 4 in Smith and Lewin (2009) Springer. Reprinted with kind permission from Springer Science+Business Media B.V.