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. 2015 Jul 14;29(4):275–284. doi: 10.1007/s40259-015-0132-7

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© The Author(s) 2015

Open AccessThis article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial 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 4 — Prescribing patterns of biosimilar erythropoiesis-stimulating agent (ESA) users, stratified by calendar year and center. “Naive” means no ESA dispensing within the previous year, “Prevalent” means only the same biosimilar dispensing within the previous year, and “Switcher” means at least one dispensing of a different ESA within the previous year. The numbers shown inside each bar represent the numbers of naive, prevalent, and switcher users. 1 year of database history before each year in the graph should be available, so it was not possible to evaluate use in the year 2011 in the Palermo Local Health Unit (LHU)