1. Improvement Analyst, The Health Foundation, London, UK
2. Lecturer in Statistics, Faculty of Public Health and Policy, London School of Hygiene & Tropical Medicine, UK
3. Lecturer of Medical Statistics, Faculty of Public Health and Policy, London School of Hygiene & Tropical Medicine, UK
4. Reader, Faculty of Public Health and Policy, London School of Hygiene & Tropical Medicine, UK
5. Previously Honorary Senior Lecturer in Health Services Research, Faculty of Public Health and Policy, London School of Hygiene & Tropical Medicine, UK
6. Head of Research and Development, OptiMedis AG, Hamburg, Germany