Serum resistin levels of obese and lean children and adolescents: Biochemical analysis and clinical relevance - Gerber, M; Boettner, A; Seidel, B; Lammert, A; Bar, J; Schuster, E; Thiery, J; Kiess, W; Kratzsch, J (J Clin Endocrinol Metab, 2005)