RT Journal Article SR Electronic T1 Molecular genetics of disorders of haem biosynthesis. JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 977 OP 981 DO 10.1136/jcp.46.11.977 VO 46 IS 11 A1 G H Elder YR 1993 UL http://jcp.bmj.com/content/46/11/977.abstract AB