Body mass index and prevalence of obesity in subjects of Hellenic origin aged 0–18years, living in the Athens area - Chiotis, D; Krikos, X; Tsiftis, G; Hatzisymeaon, M; Maniati-Christidi, M; Dacou-Voutetakis, C (Ann Clin Paediatr Univ Atheniensis, 2004)