1. National Poisons Information Service Birmingham, Birmingham, United Kingdom of Great Britain and Northern Ireland
2. National Poisons Information Service Edinburgh, Edinburgh, United Kingdom of Great Britain and Northern Ireland
3. Liverpool School of Tropical Medicine, Liverpool, United Kingdom of Great Britain and Northern Ireland
4. Tropical and Infectious Diseases Unit, Liverpool University Hospitals Foundation Trust, Liverpool, United Kingdom of Great Britain and Northern Ireland
5. Nuffield Department of Clinical Medicine, University of Oxford, Oxford, United Kingdom of Great Britain and Northern Ireland
6. Newcastle Upon Tyne Hospitals NHS Foundation Trust, Newcastle Upon Tyne, United Kingdom of Great Britain and Northern Ireland
7. National Poisons Information Service Cardiff, Llandough, United Kingdom of Great Britain and Northern Ireland