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. 2014 Jun 14;14:439. doi: 10.1186/1471-2407-14-439

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Copyright © 2014 Riihimäki et al.; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. 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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Kaplan-Meier curves for metastatic (M1) and non-metastatic (M0) non-CUP liver (A) and pancreatic (B) cancer patients, comparing to survival of patients with an initial diagnosis of CUP, eventually dying of liver or pancreatic cancer, according to their death certificates.