1. Primary Care Research Unit of Bizkaia, BioCruces Health Research Institute, Bilbao, Spain, Preventive Medicine and Public Health Department, University of the Basque Country. Faculty of Medicine and Odontology. UPV/EHU
2. Nurse, Enkarterrri-Ezkerraldea-Cruces Health Region, Basque Health Service (Osakidetza), Spain
3. Enkarterrri-Ezkerraldea-Cruces Health Region, Basque Health Service (Osakidetza), Spain
4. Nurse, Bilbao-Basurto Health Region, Basque Health Service (Osakidetza), Spain
5. Nurse, Primary Care Research Unit of Bizkaia, BioCruces Health Research Institute, Bilbao, Spain
6. Statistician, Primary Care Research Unit of Bizkaia, BioCruces Health Research Institute, Bilbao, Spain
7. Primary Care Research Unit of Bizkaia, BioCruces Health Research Institute, Bilbao, Spain
8. Regenerative Medicine Laboratory, BioCruces Health Research Institute, Cruces University Hospital, Spain