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. 2016 Jun 3;5(2):e115. doi: 10.2196/resprot.5665

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©Leif E Dahlberg, Daniel Grahn, Jakob E Dahlberg, Carina A Thorstensson. Originally published in JMIR Research Protocols (http://www.researchprotocols.org), 03.06.2016.

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, first published in JMIR Research Protocols, is properly cited. The complete bibliographic information, a link to the original publication on http://www.researchprotocols.org, as well as this copyright and license information must be included.

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Mean NRS pain score for active patients (●) and number of patients (○) remaining in the program at each week. Due to decreasing number of patients during the course of the program, individual weekly changes may have a disproportional effect on the mean pain level.