1. College of Medicine and Dentistry, James Cook University, Cairns, Australia;
2. Department of Medicine, Cairns and Hinterland Hospital and Health Service, Cairns, Australia;
3. College of Public Health, Medical and Veterinary Sciences, James Cook University, Cairns, Australia;
4. Pharmacy Department, Cairns Hospital, Cairns, Australia;
5. Environmental Health Services, Tropical Public Health Services, Cairns and Hinterland Hospital and Health Service, Cairns, Australia;
6. The Kirby Institute, University of New South Wales, Kensington, Australia