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. 2019 May 23;42(9):1045–1053. doi: 10.1007/s40264-019-00831-4

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© The Author(s) 2019

Open AccessThis article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial 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 — Receiver operating characteristic (ROC) curve for the zero scenario (for small investigator sites)