Year: 197219721974197619781980198219841986198819901992199419961998200020022004200601234AverageConcentrationAverage Vitamin A Concentration (μmol/L)Measured in Serum or PlasmaData from World Health Organization (WHO):The presented data comes from the WHO Vitamin A deficiency database.Most Vitamin A deficiencies are reported in newborns and prepubescent youth.Hover or click specific countries for more details, such as the age of study participants.Play
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