Affiliation: | (1) Department of Haematology, University of Wales College of Medicine, Heath Park, Cardiff CF4 4XN, UK Tel.: +44 1222 742 369; Fax: +44 1222 744 655, GB;(2) Department of Oral Surgery, Medicine and Pathology, University of Wales College of Medicine, Heath Park, Cardiff CF4 4XN, UK, GB;(3) Department of Pathology, University of Wales College of Medicine, Heath Park, Cardiff CF4 4XN, UK, GB |