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APA Citation
Bain, B., Broom, G., Woodside, J., Litwinczuk, R., & Wickramasinghe, S. (1982). assessment of a radioisotopic assay for vitamin B12 using an intrinsic factor preparation with R proteins blocked by vitamin B12 analogues. Journal of clinical pathology, 35(10), 1110–1113. http://access.bl.uk/ark:/81055/vdc_100135177705.0x000043