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The authors performed an organized search in PubMed for articles posted as late as January 2020 in Spanish, English, French and Portuguese. Specific searches (twelve as a whole) paired three hyphenated and non-hyphenated variations of 'semiquantitative food frequency questionnaire' with both 'validity' and 'validation' with the 'all areas' and the 'title/abstract' retrieval categories. Independent removal of articles ended up being carried out by four writers utilizing predefined data fie