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. 2019 Aug 28;19:852. doi: 10.1186/s12885-019-6075-5

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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. 5 — Survival curves for metastatic gastric adenocarcinoma patients who undergo gastrectomy and those without primary tumor surgery. Total scores were calculated according to preoperative nomogram. a: Total score cut-off value of 28 was set in development cohort, Cox proportional hazards regression was used to compare their survival with contemporarily registered cases who without primary tumor resection. b: Patients in validation cohort were divided into two groups by using a total score cut-off value of 28, Cox proportional hazards regression was used to compare their survival with contemporarily registered cases who without primary tumor resection