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. 2015 Nov 14;15:146. doi: 10.1186/s12872-015-0141-y

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© Daka 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 — Schematic overview of study design and follow-up of the study. CHD; coronary heart disease, ET-1; endothelin-1, PCI; percutaneous coronary intervention, CABG; coronary artery bypass grafting