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. 2019 Nov 28;47(3):713–720. doi: 10.1007/s00259-019-04584-1

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© The Author(s) 2019

Open Access This 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.

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Fig. 2 — Kaplan-Meier plot shows progression free survival of the patients stratified by PSA response. Patients with any PSA reduction revealed significantly longer PFS than patients with no PSA decline (27 vs. 15 weeks, P < 0.0001). Patients with a PSA reduction of ≥ 80% had significantly longer PFS than patients with no PSA reduction (38 vs. 22 weeks, P = 0.03)