RT Journal Article SR Electronic T1 Quantities and units in clinical chemistry. JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 285 OP 286 DO 10.1136/jcp.22.3.285 VO 22 IS 3 A1 R Dybkaer YR 1969 UL http://jcp.bmj.com/content/22/3/285.abstract AB