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. 2018 Jul 11;18:5. doi: 10.1186/s12895-018-0074-0

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© The Author(s). 2018

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. 2 — Cascade figure of patient flow. Legends: ¹BT: biological therapies; ²for the purpose of analysis, multiple cycles of any BT treatment administered to one patient were counted as different patients. ³number of persistent patients during 12-month after BT initiation/number of total patients