1. School of Medicine and Public Health, Faculty of Health and Medicine, Waratah, NSW, Australia
2. Formerly School of Medicine and Public Health, Faculty of Health and Medicine, Waratah, NSW, Australia
3. Discipline of Pharmacy and Experimental Pharmacology, School of Biomedical Sciences & Pharmacy, Faculty of Health and Medicine, University of Newcastle, Callaghan, NSW, Australia
4. Clinical Research Design and Statistical Unit, Hunter Medical Research Institute, New Lambton, NSW, Australia