RT Journal Article SR Electronic T1 Rational requesting or rationing testing? JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 121 OP 122 DO 10.1136/jcp.2003.11122 VO 57 IS 2 A1 R J Lock YR 2004 UL http://jcp.bmj.com/content/57/2/121.abstract AB