1. Emergency Medicine Department Glasgow Royal Infirmary Glasgow UK
2. Academic Unit of Surgery, School of Medicine, Royal Infirmary University of Glasgow Glasgow UK
3. The Scottish Trace Elements and Micronutrient Reference Laboratory, Department of Biochemistry Royal Infirmary Glasgow UK
4. Department of Gastroenterology Glasgow Royal Infirmary Glasgow UK
5. Department of Neurology, Institute of Neurological Sciences Queen Elizabeth University Hospital Glasgow UK
6. School of Medicine Veterinary and Life Sciences Wolfson Medical School Building University of Glasgow Glasgow UK
7. Alcohol and Drug Recovery Service Greater Glasgow and Clyde Dykebar hospital Glasgow UK
8. Emergency Department Edinburgh Royal Infirmary Edinburgh UK
9. Department of Mathematics and Statistics University of Strathclyde Glasgow UK