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. 2018 May 9;8:7426. doi: 10.1038/s41598-018-25773-2

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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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Venn diagrams comparing patient numbers obtained when (a) using NLP to identify suicide ideation versus using Risk Assessment (structured) fields only; (b) using NLP to identify suicide attempts versus using Risk Assessment (structured) fields only and (c) using NLP to identify suicide attempt versus using ICD-10 codes for suicide attempt only.