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. 2014 Jan 23;105(1):105–109. doi: 10.1111/cas.12321

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© 2013 The Authors. Cancer Science published by Wiley Publishing Asia Pty Ltd on behalf of Japanese Cancer Association.

This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is noncommercial and no modifications or adaptations are made.

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Overall survival (OS) using (a) the European Treatment and Outcome Study (EUTOS) score, (b) the Sokal score and (c) the Hasford score. There is a significant difference (P = 0.005) in OS between the risk groups according to the Hasford score, but no significant difference according to the EUTOS and Sokal scores. NS, not significant.