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. 2014 Jul 25;9:115. doi: 10.1186/s13023-014-0115-7

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Copyright © 2014 Latino et al. ; licensee Biomedcentral Ltd

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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Variation in D-prevalence across age-groups in all cities in Ontario, Canada. D-prevalence rates were significantly higher in older adults (0.36 ± 0.32 per 5000) compared to younger adults (0.26 ± 0.22 per 5000).