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. 2021 Oct 10;142(12):3721–3736. doi: 10.1007/s00402-021-04200-8

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© The Author(s) 2021

Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 2 — Evaluation of the Quality Assessment of Diagnostic Accuracy Studies 2 (QUADAS-2) tool to assess studies using stress radiography, magnetic resonance imaging (MRI) and ultrasonography for assessment of MCL lesions. a Risk of Bias. Proportion of studies with low, high or unclear risk of bias. b Applicability. Proportion of studies with low, high, or unclear concerns regarding applicability