Intersalt data. Epidemiological studies should be designed to reduce correction needed for measurement error to a minimum.
Day
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NE
D001794:Blood Pressure / Q000502:physiology*; D001795:Blood Pressure Determination; D003627:Data Interpretation, Statistical; D006801:Humans; D012964:Sodium / Q000652:urine; D012982:Sodium, Dietary / Q000008:administration & dosage*
D012982:Sodium, Dietary; D012964:Sodium