1. Departamento de Medicina da Comunidade, Informação e Decisão em SaúdeFaculdade de Medicina da Universidade do Porto Oporto Portugal
2. Center for Health Technology and Services Research (CINTESIS)Faculdade de Medicina da Universidade do Porto Oporto Portugal
3. Department of Vascular SurgeryLeeds Teaching Hospitals NHS Trust Leeds United Kingdom
4. Leeds Institute of Cardiovascular and Metabolic MedicineUniversity of Leeds UK
5. VA Puget Sound Health Care System Seattle Washington
6. Department of Diabetes and EndocrinologyNottingham University Hospitals NHS Trust—City Campus Nottingham United Kingdom
7. Division of Vascular Surgery and Endovascular Therapy, Michael E. DeBakey Department of SurgeryBaylor College of Medicine Houston Texas
8. Department of Diabetes and AngiologyMarienkrankenhaus gGmbH Soest Germany
9. Institute for Health Services Research and Health EconomicsServices Research and Health Economics, Faculty of Medicine, Heinrich‐Heine‐ University Düsseldorf Germany
10. Department of Diabetes and EndocrinologyUniversity Hospitals of Derby and Burton NHS Foundation Trust Derby United Kingdom