1. Department of Molecular and Cellular Pathology, University of Dundee, Ninewells Hospital and Medical School, Ninewells, Dundee DD1 9SY, UK
2. Department of Medicine, Dumfries and Galloway Royal Infirmary, Bankend Road, Dumfries DG1 4AP, UK
3. Department of Biochemistry, Dumfries and Galloway Royal Infirmary, Bankend Road, Dumfries DG1 4AP, UK