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. 2017 Apr 4;13:17. doi: 10.1186/s13223-017-0190-0

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© The Author(s) 2017

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 — Mean FEV1 (with 95% CI) at three time points (when first seen, when sputum became normal, when last seen). Asterisk rates of decline are for the average age and height for the respective group