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Assessment of serum total 25-hydroxyvitamin D assays for Vitamin D External Quality Assessment Scheme (DEQAS) materials distributed at ambient and frozen conditions.
Sempos, Christopher T.; Williams, Emma L.; Carter, Graham D. et al.
2022 • In Analytical and Bioanalytical Chemistry

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Sempos2021_Article_AssessmentOfSerumTotal25-hydro.pdf

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