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. 2015 May 6;15:54. doi: 10.1186/s12890-015-0058-3

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© Wens et al.; licensee BioMed Central. 2015

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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Correlation between cranial-caudal length ratios and FVC supine (A), postural drop (B) and MIP (C). The dots represent patients and the triangles volunteers. Spearman’s correlation coefficient (r) was used to calculate the correlation between the cranial-caudal length ratio versus FVC in supine position, the postural drop (ΔFVC) and MIP. As these calculations were performed only in the Pompe patients, the volunteers were excluded for these analyses. FVC = forced vital capacity, MIP = maximum static inspiratory pressure.