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. 2019 Mar 28;11:29. doi: 10.1186/s13195-019-0481-4

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© The Author(s). 2019

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 — Kaplan-Meier estimates of the cumulative incidences of survival and free of institutionalization, according to lower tertile of CSF Aβ42 compared to the two higher tertiles. Cut-offs used for definition of lower tertile of CSF Aβ42: ≤ 336 ng/mL before November 2012, ≤ 494 ng/mL after December 2012