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. 2019 Jun 7;11(6):1290. doi: 10.3390/nu11061290

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© 2019 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

PMC Copyright notice

Criteria used to classify food frequency questionnaire (FFQ) and weighted diet record (WDR) foods into NOVA categories of food processing, developed from the work of Monteiro et al. [1,2].