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Dietary intake was assessed using the validated, semiquantitative Scottish Collaborative Group (SCQ) FFQ (http://www.foodfrequency.org/) consisting of 170 food items grouped into 19 sections. For each food item, participants specified their frequency of consumption over the previous 2–3 months in terms of measures/day (1, 2, 3, 4, 5+) (equivalent to a standard portion) and days/week (1, 2, 3, 4, 5, 6, or 7 days/week, more than once a month, rarely). Foods reported were converted to a daily weight using food portion sizes (24).
Copyright and License information: The Author(s) ©2017
Open Access: This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits use, duplication, adaptation, distribution and reproduction in any medium or format, as long as 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.
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