1. NHMRC Research Unit in Epidemiology and Preventive Medicine, and Unit of Clinical Epidemiology, Department of Medicine, University of Western Australia, Nedlands, WA 6009
2. Department of Respiratory Medicine, Sir Charles Gairdner Hospital, Nedlands, WA 6009
3. Cancer Registry, Department of Public Health, Curtin House, 60 Beaufort Street, Perth, WA 6000