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APA Citation
Rigas, A. S., Pedersen, O. B., Magnussen, K., Erikstrup, C., & Ullum, H. (n.d.). iron deficiency among blood donors: experience from the Danish Blood Donor Study and from the Copenhagen ferritin monitoring scheme. Transfusion medicine, 29, 23–27. http://access.bl.uk/ark:/81055/vdc_100080205077.0x00003b