RT Journal Article SR Electronic T1 Normal values for individual plasma cobalamins. JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 506 DO 10.1136/jcp.22.4.506 VO 22 IS 4 A1 Linnell, J C A1 Mackenzie, H M A1 Mattews, D M YR 1969 UL http://jcp.bmj.com/content/22/4/506.abstract AB