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Trends of dietary vitamin B6 (A1–A4), vitamin E (B1–B4), vitamin K (C1–C4), and choline (D1–D4) by sex, age, socioeconomic status, race/ethnicity, and body mass index (BMI) for percentage not meeting dietary reference intakes among US adults across seven surveys in the National Health and Nutrition Examination Survey (NHANES 2003–2016).
