1. Department of Social Sciences, Institute for Research on Socio-Economic Inequality (IRSEI), University of Luxembourg, Esch-sur-Alzette, Luxembourg.
2. Department of Epidemiology and Population Health, Stanford University, Palo Alto, CA, USA.
3. Department of Engineering, University of Luxembourg, Esch-sur-Alzette, Luxembourg.
4. Centre for Dementia Prevention, University of Edinburgh, Edinburgh, UK.
5. Ohio University, Athens, OH, USA.
6. School of Mathematics, University of Edinburgh, Edinburgh, UK.