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APA Citation
Kranz, S., Pimpin, L., Fawzi, W., Duggan, C., Webb, P., & Mozaffarian, D. (2017). mortality Benefits of Vitamin A Are Not Affected by Varying Frequency, Total Dose, or Duration of Supplementation. Food and nutrition bulletin, 38(2), 260–266. http://access.bl.uk/ark:/81055/vdc_100068873058.0x000006