1. Centre for Pharmaceutical Medicine Research, Institute of Pharmaceutical Science King's College London London UK
2. National Programme on Substance Abuse Deaths London UK
3. Toxicology Unit, Leicester Royal Infirmary Leicester UK
4. LGC Limited Ely UK
5. Toxicology Department Hampshire Scientific Services Hampshire UK
6. Department of Toxicology Birmingham Heartlands Hospital Birmingham UK
7. Analytical Services International Limited, St George's University of London London UK
8. School of Psychological Sciences University of Bristol Bristol UK