1. Department of General Medicine Canterbury District Health Board Christchurch New Zealand
2. Department of Medicine University of Otago Christchurch New Zealand
3. Department of Endocrinology Canterbury District Health Board Christchurch New Zealand
4. Department of Pathology University of Otago Christchurch New Zealand
5. Canterbury Health Laboratories Christchurch New Zealand
6. Department of Clinical Pharmacology Canterbury District Health Board Christchurch New Zealand