RT Journal Article SR Electronic T1 Letter: Diagnosis of heterozygous beta thalassaemia. JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 203 OP 204 DO 10.1136/jcp.28.3.203 VO 28 IS 3 A1 Franzini, C YR 1975 UL http://jcp.bmj.com/content/28/3/203.abstract AB