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. 2019 May 8;19:94. doi: 10.1186/s12874-019-0740-x

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© The Author(s). 2019

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 — Data flow from local CPRS/VistA systems to the Corporate Data Warehouse (CDW). Legend: On the left, we depict the flow of data from a single local CPRS/VistA system (Ann Arbor), to a regional data warehouse, and ultimately, to the CDW. On the right, we depict the flow of data from local CPRS/VistA system, to four regional data warehouses, and ultimately to the CDW. (This Figure is intended to display the flow of data from around the country to the CDW, but does not depict the exact number and location of local CPRS/VistA systems). All figures are permitted for use without acknowledgement from The Noun Project (https://thenounproject.com/) of which we are members