1. Nutrition and Food Standards Unit, Hellenic Food Authority, Athens, Greece
2. Department of Nursing, University of Thessaly, Larisa, Greece
3. School of Biology, Aristotle University of Thessaloniki, Thessaloniki, Greece
4. Department of Medicine, University of Thessaly, Larisa, Greece
5. 1st Propedeutic Department of Internal Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece
6. New Vitality Clinic, Reading, UK