1. Nuffield Department of Primary Care Health Sciences University of Oxford Oxford UK
2. Department of Clinical Epidemiology Leiden University Leiden The Netherlands
3. Faculty of Health & Medical Sciences University of Surrey Guildford Surrey UK
4. Royal College of General PractitionersRoyal College of General Practitioners (RCGP) Research and Surveillance Centre (RSC London UK
5. King’s Thrombosis Centre Department of Haematological Medicine King’s College NHS Foundation Trust London UK