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. 2017 Jun 13;15:137. doi: 10.1186/s12967-017-1237-1

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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 — Reduction of the Zung Self-Rating Anxiety Scale (SAS) Score Subsequent to Xenon Administration. Patients with only PD (group 1, n = 42) and “comorbid” PD (group 2, n = 39) where administered 6–7 sessions of xenon inhalation as described in “Methods”. Analysis of SAS score was performed. Error bars indicate 95% CI