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. 2017 Feb 20;18:69. doi: 10.1186/s12882-017-0445-5

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© The Author(s). 2017

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. 7 — Catheter type. Arrowgard Blue denotes a group comprising 16 cm or 20 cm 12Fr or 25 cm 14Fr polyurethane antimicrobial treated catheters. Niagara when not specified denotes a group comprising 15 cm, 20 cm or 24 cm 13.5Fr polyurethane catheters. HR denotes reanalysis of the original data by Cox proportional hazards model