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. 2020 Dec 23;42(3):517–525. doi: 10.1007/s00246-020-02509-6

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© The Author(s) 2020

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 — Receiver operation characteristic (ROC) curve for selected fetal echocardiographic variables using postnatal development of aortic coarctation as the outcome: black continuous line: product of isthmus/arterial duct in the three-vessel trachea view and mitral/tricuspid valve in the four-chamber view (I/D_3VTxMV/TV); gray continuous line: carotid-subclavian artery index; black dashed line: isthmus-ductus ratio in the three-vessel trachea view; gray dashed line: mitral/tricuspid valve annulus index; black dotted line: isthmus Z-score in the three-vessel trachea view; gray dotted line: mitral valve annulus Z-score (Krishnan et al. [14])