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. 2022 Jan 10;12:2. doi: 10.1186/s12348-021-00278-8

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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. 1 — MFC and PIC are undistinguishable. Two tables defining MFC and PIC for which the titles have been hidden. The two “entities” cannot be distinguished and statistical differences among items do not appear to be significant. This is one more argument that the two “sub-entities” are one and the same disease [33].