1. CS Praza do Ferrol; EOXI Lugo, Cervo, e Monforte de Lemos; Galician Health Service; Lugo Spain
2. School of Medicine and Dentistry; University of Santiago de Compostela; Santiago de Compostela Spain
3. Epidemiology and Clinical Research Unit; Foundation for Research, Development and Innovation Ramón Domínguez; University Hospital of Santiago de Compostela; Santiago de Compostela Spain
4. Scientific Advice Unit; Avalia-t. Galician Agency for Health Knowledge Management (ACIS); Santiago de Compostela Spain
5. School of Medicine and Dentistry; University of Oviedo; Oviedo Spain