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. 2016 Jan 4;16:1. doi: 10.1186/s12890-015-0163-3

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© Chang et al. 2015

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. 1 — Initial chest radiography demonstrated mild pulmonary infiltration over the left lung on day 1 (a). A portable chest X-ray revealed prominent bilateral infiltrates at 48 h later after admission to our hospital (b), progressed to worse picture on day 4 (c) and recovery to near-normal x ray on day 22 (d)