1. Toxicology Unit, Department of Forensic Medicine, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand;
2. South Asian Clinical Toxicology Research Collaboration, University of Peradeniya, Peradeniya, Sri Lanka;
3. Clinical Pharmacology and Toxicology Research Group, Discipline of Pharmacology, Faculty of Medicine and Health, The University of Sydney, Sydney, New South Wales, Australia;
4. Faculty of Allied Health Sciences, University of Peradeniya, Peradeniya, Sri Lanka