1 Department of Nutrition & Dietetics, Harokopio University of Athens, Greece.
2 Department of Physical Education and Sport Science, Aristotle University of Thessaloniki, Thessaloniki, Greece.
3 Clinic of Social and Family Medicine, School of Medicine, Heraklion, University of Crete, Crete, Greece.
4 First Department of Pediatrics, Athens University Medical School, "Aghia Sophia" Children's Hospital, Athens, Greece.
5 Department of Nutrition & Dietetics, Harokopio University of Athens, 70, El.Venizelou Ave, 17671 Kallithea, Athens, Greece. Electronic address: manios@hua.gr.