PT - JOURNAL ARTICLE AU - Tiffin, A. I. AU - Williamson, G. M. TI - THE ROUTINE ASSAY OF B<sub>12</sub> IN SERUM AID - 10.1136/jcp.11.3.224 DP - 1958 May 01 TA - Journal of Clinical Pathology PG - 224--226 VI - 11 IP - 3 4099 - http://jcp.bmj.com/content/11/3/224.short 4100 - http://jcp.bmj.com/content/11/3/224.full SO - J Clin Pathol1958 May 01; 11