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. 2019 Mar 18;19:61. doi: 10.1186/s12874-019-0689-9

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© The Author(s) 2019

Open Access This 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 — Treatment comparisons: Osteoarthritis of the knee. Network diagram for example dataset of treatments for osteoarthritis of the knee. Edge width represents number of direct comparisons. A: standard care; B: placebo; C: no medication; D: acupuncture; Ebalneotherapy; F: braces; G: aerobic exercise; H: muscle exercise; I: heat treatment; J: insoles; K: tai chi; L: weight loss; M: sham acupuncture; N: ice/cooling; O: interferential; P: laser; Q: manual; R: neuromuscular electrical stimulation (NMES); S: pulsed electrical stimulation (PES); T: PEMF; U: static magnets; V: transcutaneous electrical nerve stimulation (TENS)