1. Department of Non-communicable Disease Epidemiology, Faculty of Epidemiology and Population Health, London School of Hygiene and Tropical Medicine, London, UK
2. Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford, UK
3. Health eResearch Centre, University of Manchester, Manchester, UK
4. Department of Pharmacoepidemiology, Utrecht Institute for Pharmaceutical Sciences (UIPS), Utrecht University, Utrecht, The Netherlands
5. Epidemiology, Pfizer, New York, NY, USA