1. Federica Montseny Health Centre, Gerencia Asistencial Atención Primaria, Servicio Madrileño de Salud, Madrid, Spain
2. Medical Specialties and Public Health, School of Health Sciences, University Rey Juan Carlos, Alcorcón, Madrid, Spain
3. Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain
4. General Ricardos Health Centre, Gerencia Asistencial Atención Primaria, Servicio Madrileño de Salud, Madrid, Spain
5. Primary Care Research Unit, Gerencia de Atención Primaria, Servicio Madrileño de Salud, Madrid, Spain
6. Health Services Research on Chronic Patients Network (REDISSEC), Health Outcomes-Oriented Cooperative Research Networks (RICORS-RICAPS), ISCIII, Madrid, Spain
7. Medicina Preventiva Department, Hospital Universitario Infanta Leonor, Madrid, Spain
8. Public Health and Epidemiology Research Group, School of Medicine, Universidad de Alcalá, Madrid, Spain