1. Department of Clinical Biochemistry Galway University Hospitals Galway Ireland
2. Centre for Diabetes, Endocrinology and Metabolism Galway University Hospitals Galway Ireland
3. University College Dublin and Department of Clinical Biochemistry & Diagnostic Endocrinology Mater Misericordiae University Hospital Dublin Ireland
4. Department of Clinical Biochemistry & Diagnostic Endocrinology Mater Misericordiae University Hospital Dublin Ireland