1. Respiratory Medicine Department Canterbury District Health Board Christchurch New Zealand
2. Microbiology Department Canterbury Health Laboratories Christchurch New Zealand
3. Department of Population Health University of Otago Christchurch New Zealand
4. Department of Psychological Medicine University of Otago Christchurch New Zealand
5. Department of Pathology and Biomedical Sciences University of Otago Christchurch New Zealand
6. Department of Medicine University of Otago Christchurch New Zealand