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. 2015 Mar 25;16:34. doi: 10.1186/s12882-015-0025-5

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© Tseng et al.; licensee BioMed Central. 2015

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. 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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Inclusion and exclusion steps for the creation of the study population, veteran patients with diabetes and chronic kidney disease stages 3 and 4, USA. CKD – Chronic Kidney Disease; eGFR - estimated Glomerular Filtration Rate; FY – Fiscal Year (FY 2000: 10/1/1999-30/9/2000); HMO: Health Maintenance organization; USA – United States of America. Grey-shaded boxes indicate patient subgroups (by chronic kidney disease stage) included in the final study population.