1. Department of Sociology and Social Work, University of Basque Country (UPV/EHU), Leioa, Spain
2. Research Group Social Determinants of Health and Demographic Change-OPIK, Leioa, Spain
3. ISPED, University of Bordeaux, Bordeaux Population Health Research Centre U1219-, Bordeaux, France
4. Department of Nursing I, University of the Basque Country (UPV/EHU), Leioa, Spain