1. Department of Medicine, Sylhet MAG Osmani Medical College, Sylhet, Bangladesh;
2. Centre for Tropical Medicine and Global Health Nuffield Department of Medicine, University of Oxford, Oxford, UK;
3. Mahidol Oxford Tropical Medicine Research Unit, Mahidol University, Bangkok, Thailand;
4. Department of Gastroenterology, Bangabandhu Sheikh Mujib Medical University, Dhaka, Bangladesh;
5. Department of Medicine, Shaheed Suhrawardy Medical College Hospital, Dhaka, Bangladesh;
6. International Centre for Diarrhoeal Disease Research, Dhaka, Bangladesh;
7. Department of Pharmacology, Toxicology, & Therapeutics, University/BHF Centre for Cardiovascular Science, University of Edinburgh, Edinburgh, UK;
8. South Asian Clinical Toxicology Research Collaboration, University of Peradeniya, Peradeniya, Sri Lanka