1. Breast Center, São João University Hospital, Faculty of Medicine, University of Porto, Porto, Portugal.
2. Center for Research in Health Technologies and Services (CINTESIS.UP), University of Porto, Porto, Portugal.
3. Department of Surgery and Physiology, Cardiovascular Research and Development Unit, Faculty of Medicine, University of Porto, Porto, Portugal.
4. Hospital Epidemiology Center, Faculty of Medicine, São João University Hospital, Porto, Portugal.
5. EPIUnit, Institute of Public Health, University of Porto, Porto, Portugal.
6. Department of Public Health and Forensic Sciences, and Medical Education, Faculty of Medicine, University of Porto, Porto, Portugal.
7. Department of Internal Medicine, Egas Moniz Hospital, Lisboa, Portugal.
8. Department of Internal Medicine, Alto Minho Hospital, Viana do Castelo, Portugal.