1. Department of Respiratory Medicine Middlemore Hospital, Counties Manukau District Health Board Auckland New Zealand
2. Department of Medicine, Faculty of Medical and Health Sciences The University of Auckland Auckland New Zealand
3. Research Office, Middlemore Hospital Counties Manukau District Health Board Auckland New Zealand
4. Department of Microbiology Middlemore Hospital, Counties Manukau District Health Board Auckland New Zealand
5. Department of Respiratory Medicine Western Health Melbourne Victoria Australia
6. Melbourne Medical School The University of Melbourne Melbourne Victoria Australia
7. Department of Infectious Diseases Middlemore Hospital, Counties Manukau District Health Board Auckland New Zealand