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. 2014 Jul 22;12:28. doi: 10.1186/1476-7120-12-28

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Copyright © 2014 Faustino et al.; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. 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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Echocardiographic parameters used to calculate the left atrial volumes. Legend: A1 - LA area in 4C view; A2 - LA area in 2C view; D1 - LA AP diameter; D2 - medial–lateral diameter; D3 - superior-inferior diameter in 4C view; D4 - superior-inferior diameter in 2C view.