RT Journal Article SR Electronic T1 HORMONES IN BLOOD JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 93 OP 93 DO 10.1136/jcp.23.1.93-b VO 23 IS 1 A1 M. J. Levell YR 1970 UL http://jcp.bmj.com/content/23/1/93.2.abstract AB