1. Departments of Pathology & Cell Biology and Medicine, Vagelos College of Physicians and Surgeons Columbia University Irving Medical Center New York New York USA
2. School of Medicine and Population Health University of Sheffield Sheffield UK
3. Centre for Evidence Based Medicine, Nuffield Department of Primary Care Health Sciences University of Oxford, Radcliffe Observatory Quarter Oxford UK
4. Department of Clinical Pharmacology, Clinical Research Facility St Thomas' Hospital London UK
5. Leiden University Medical Centre and Centre for Human Drug Research Leiden The Netherlands