Reproducibility and relative validity of a food frequency questionnaire to estimate intake of dietary phylloquinone and menaquinones
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Title
Reproducibility and relative validity of a food frequency questionnaire to estimate intake of dietary phylloquinone and menaquinones
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Eur J Clin Nutr 2017, 71(12):1423-8
Abstract
This study aims to investigate the reproducibility and relative validity of the Dutch food frequency questionnaire (FFQ), to estimate intake of dietary phylloquinone and menaquinones compared with 24-h dietary recalls (24HDRs) and plasma markers of vitamin K status.