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. 2020 Feb 21;22:33. doi: 10.1186/s13075-020-2131-4

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© The Author(s). 2020

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. 2 — Serum titer of the aPLs grouped according to the number of positive criteria antibodies. Triple, double, and single refers to the positive numbers of the criteria aPLs. Positive aCL is defined as IgG aCL ≥ 40 GPL and/or IgM aCL ≥ 40 MPL by ELISA, positive aβ2GPI is defined as IgG aβ2GPI ≥ 20 SGU and/or IgM aβ2GPI ≥ 20 SMU, and positive LA is defined as ≥ 1.2, in line with the Sydney classification criteria