T. S. Low-Beer, C. F. McCarthy, W. I. Austad, A. Brzechwa-Ajdukiewicz, A. E. Read
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Serum Vitamin B12 Levels and Vitamin B12 Binding Capacity in Pregnant and Non-pregnant Europeans and West Indians
Br Med J 1968; 4 :160
doi:10.1136/bmj.4.5624.160