1. Department of Nursing, Center for Health Services Management and Evaluation, National and Kapodistrian University of Athens, Athens, Greece
2. Department of Sociology, Panteion University of Social and Political Sciences, Athens, Greece
3. Department of International Development, London School of Economics and Political Science, London, UK
4. Department of Nursing, Sector of Public Health, Occupational Health Nursing, National and Kapodistrian University of Athens, Athens, Greece