1. Department of Neurology, University Hospital Complex of Pontevedra, Pontevedra, Spain
2. Department of Epidemiology and Public Health, University of Santiago de Compostela, Santiago de Compostela, Spain
3. Department of Epidemiology and Public Health, School of Medicine, University of Santiago de Compostela, Santiago de Compostela, Spain
4. Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain
5. Department of Preventive Medicine, University Hospital Complex of Santiago de Compostela, Santiago de Compostela, Spain
6. Section of General Internal Medicine, Yale School of Medicine, New Haven, CT, USA
7. Department of Health Policy and Management, Yale School of Public Health, New Haven, CT, USA
8. Axencia Galega de Coñecemento en Saúde (ACIS), Santiago de Compostela, Spain