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)