1. Pfizer, Worldwide PDM; Environmental Sciences; Groton Connecticut USA
2. AstraZeneca UK Limited; Brixham Environmental Laboratory, Freshwater Quarry; Brixham United Kingdom
3. GlaxoSmithKline; Philadelphia; Pennsylvania USA
4. Novartis Pharma AG; Global Health, Safety, Environment and BC; Basel Switzerland
5. GlaxoSmithKline; Environmental, Health and Safety; Ware Hertfordshire United Kingdom