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. 2018 Mar 27;18:54. doi: 10.1186/s12905-018-0542-z

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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. 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 — Pain drawing to report location of any on-going pain. The pain locations were coded as: 1) head, 2) thoracic spine, 3) sacral area left, 4) sacral area right, 5) leg back left 6) leg back right, 7) symphysis and low abdomen 8) hip right, 9) hip left, 10) leg front right, 11) leg front left and 12) lumbar spine