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. 2016 Jul 11;17:269. doi: 10.1186/s12891-016-1143-3

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© The Author(s). 2016

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. 1 — Flow diagram demonstrating methods for identification of studies to assess the treatment of intertrochanteric femur fractures in the elderly using either the Asia proximal femoral nail anti-rotation (PFNA-II) or the dynamic hip screw (DHS) systems, and reasons for exclusion