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. 2017 Jul 17;17:133. doi: 10.1186/s12883-017-0907-1

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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. 1 — Hospital recruitment and randomization. *Reasons are not mutually exclusive. “Other” reasons include: Decision made at the health system level; bureaucratic issues; decision maker(s) unconvinced of additive value of participation; concerns about sustainability, who should be the on-site principal investigator, and/or IRB/consenting