1. Head of KETHEA’s Ariadne Open Care Unit,Treatment Program for Dependent Individuals, Heraklion, Crete, Greece
2. KETHEA’s Ariadne Treatment Program for Dependent Individuals, Heraklion, Crete, Greece
3. Head of KETHEA’s Ariadne Research Department, Treatment Program for Dependent Individuals, Heraklion, Crete, Greece
4. Head of KETHEA’s Psychiatric Comorbidity Unit, Treatment Program for Dependent Individuals, Athens, Greece
5. KETHEA’s Research Department, Therapy Center for Dependent Individuals, Athens, Greece
6. Group dynamics and Adult Education, School of Education, Department of Pedagogy and Primary Education, National and Kapodistrian University of Athens, Athens, Greece