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. 2016 Jun 23;53(5):807–815. doi: 10.1007/s00592-016-0877-6

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© The Author(s) 2016

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.

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Fig. 2 — a Kaplan–Meier in-hospital survival curves. b Kaplan–Meier 12-month survival curves. Group 1 versus 2 P = 0.06; group 1 versus 3 P = 0.001; group 2 versus 3 P = 0.04