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. 2021 Mar 10;11:42. doi: 10.1186/s13613-021-00830-8

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© The Author(s) 2021

Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 2 — Kaplan–Meier survival curve of the two groups. Shaded regions are the difference of restricted mean survival time (RMST) for two groups among 28 (a, c), 60 (b, d) days before and after propensity score matching (1:1), means the increment of survival days due to the combination therapy among 28 and 60 days. Combination group: patients who received albumin within the first 24 h after initiation of crystalloids administration. Crystalloids group: patients who received crystalloids alone as fluid therapy