1. School of Health Science, Waterford Institute of Technology, Waterford, Ireland
2. Centre for Research and Studies in Sociology, University Institute of Lisbon (Iscte-iul)/centro de Investigação e Estudos de Sociologia (CIES-IUL) and Universidade Aberta, Lisbon, Portugal
3. Public Health Institute, Liverpool John Moores, Liverpool John Moores, Liverpool, UK