1. Worldwide Epidemiology, Quantitative Sciences, GlaxoSmithKline R&D, Uxbridge, United Kingdom
2. Discovery Biometrics, Quantitative Sciences, GlaxoSmithKline R&D, Uxbridge, United Kingdom
3. Worldwide Epidemiology, Quantitative Sciences, GlaxoSmithKline R&D, Durham, North Carolina, USA
4. Academic DPU, GlaxoSmithKline R&D, Durham, North Carolina, USA
5. II MDC, GlaxoSmithKline R&D, Uxbridge, United Kingdom
6. Department of Critical Care Services, Royal Adelaide Hospital and the Discipline of Acute Care Medicine, University of Adelaide, Adelaide, Australia
7. Department of Medicine and Public Health Sciences, Queen's University, Kingston, Ontario, Canada
8. Clinical Evaluation Research Unit at Kingston General Hospital, Kingston, Ontario, Canada