[1] Hospital Alto Deba,Gipuzkoa Primary Care
[2] Hospital Galdakao-Usansolo,Integrated Healthcare Organisation Research Unit
[3] Hospital Basurto,Research Unit
[4] Corporacio Parc Tauli,General Surgery Department
[5] Hospital Basurto,Clinical Epidemiology Unit
[6] Hospital Costa del Sol,Research Unit
[7] Health Services Research on Chronic Patients Network (REDISSEC),Research Unit
[8] Biodonostia Health Research Institute,Unidad de Gestión Sanitaria
[9] Hospital ‘Alto Deba’,undefined