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. 2014 Jun 19;18(3):R126. doi: 10.1186/cc13932

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Copyright © 2014 Lima et al.; licensee BioMed Central Ltd.

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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Flowchart of the study protocol. Time points of the study were defined as baseline 1 before nitroglycerin infusion (T_BL1), time point when peripheral perfusion was normalized at the maximum dose of nitroglycerin (T_MX), and baseline 2 recorded 30 minutes after cessation of nitroglycerin infusion (T_BL2). NTG, nitroglycerin.