Ioannis E. Kostakis, Department of Home Economics and Ecology, School of Environment, Geography and Applied Economics, Harokopio University (HUA), Greece, Email: 

Iasonas Papadakis, Department of Home Economics and Ecology, School of Environment, Geography and Applied Economics, Harokopio University (HUA), Greece

Eleni Sardianou, Department of Home Economics and Ecology, School of Environment, Geography and Applied Economics, Harokopio University (HUA), Greece, Laboratory of Economic and Social Analysis of the Family and the Consumer, Harokopio University (HUA), Greece