1. Laboratory of Hygiene , Social and Preventive Medicine and Medical Statistics, School of Medicine, Faculty of Health Sciences , Aristotle University of Thessaloniki , Thessaloniki , Greece
2. Laboratory of Nutrition , Department of Nutrition and Dietetics , Alexander Technological Educational Institute , Thessaloniki , Greece
3. Laboratory of Clinical Pharmacology , School of Medicine, Faculty of Health Sciences , Aristotle University of Thessaloniki , Thessaloniki , Greece
4. Department of Medicine , School of Health Sciences , University of Thessaly , Larisa , Greece
5. Pediatric Endocrinology Unit, Paphos General Hospital , Paphos , Cyprus
6. Fourth Department of Pediatrics , School of Medicine, Faculty of Health Sciences , Aristotle University of Thessaloniki , Papageorgiou General Hospital , Thessaloniki , Greece
7. Laboratory of Hygiene , Social and Preventive Medicine and Medical Statistics, School of Medicine, Faculty of Health Sciences , Aristotle University of Thessaloniki , Thessaloniki , Greece , Phone: +30 2310999035, Fax: +30 2312205270