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. 2018 Feb 26;8:3659. doi: 10.1038/s41598-018-21851-7

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© The Author(s) 2018

Open Access This 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 license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license 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 license, visit http://creativecommons.org/licenses/by/4.0/.

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Correlation between experimental storage time of plasma at −20 °C versus predicted storage time by the elastic net regularized Poisson regression model in positive (left) and negative modes (right) in both training (top) and test (bottom) sets. Data were randomly split into training (75%) and test (25%), wherein the model was generated using the training set and validated using the test set.