[1] Uribe Integrated Healthcare Org, Osakidetza, Algorta, Spain
[2] Bidasoa Integrated Healthcare Org, Osakidetza, Hondarribia, Spain
[3] Univ Basque Country UPV EHU, Dept Preventat Med & Publ Hlth, San Sebastian, Spain
[4] Basque Govt, Dept Hlth, Vitoria, Spain