1. Postgraduate Course of Science of Stress and Health Promotion, Medical School, National and Kapodistrian University of Athens, Athens, Greece
2. Human Ecology Laboratory, Department of Economics & Sustainable Development, Harokopio University, Athens, Greece
3. First Department of Pediatrics, School of Medicine, National and Kapodistrian University of Athens, “Aghia Sophia” Children’s Hospital, Athens, Greece