1. Department of Physiology, Faculty of Medicine, University of Peradeniya, Peradeniya, Sri Lanka
2. South Asian Clinical Toxicology Research Collaboration, Faculty of Medicine, University of Peradeniya, Peradeniya, Sri Lanka
3. School of Psychology, The University of Newcastle, Callaghan, Australia
4. Department of Medicine, Faculty of Medicine, University of Peradeniya, Peradeniya, Sri Lanka
5. School of Pharmacology, Faculty of Medicine and Health, University of Sydney, Sydney, Australia