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. 2011 Dec 18;12:285. doi: 10.1186/1471-2474-12-285

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Copyright ©2011 Tschudi-Madsen et al; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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The number of pain sites (NPS) in relation to the three non-musculoskeletal symptoms with the highest explanatory power in NPS (dizziness, sleep problems, and tiredness) and the three non-musculoskeletal symptoms with the lowest explanatory power in NPS (diarrhoea, constipation, and eczema). The figure is based on the mean score of the symptoms for each NPS-score.