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. 2015 Apr 16;15:32. doi: 10.1186/s12894-015-0027-4

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© Koie et al.; licensee BioMed Central. 2015

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), 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 analysis of progression-free survival. The 1-year progression-free survival rate was 84.4% (95% confidence interval, 15.8-21.5).