Plasma leptin levels in children and adolescent: dependence on body mass index, body fat mass, gender, pubertal stage and testosterone. - Blum,WF.; Englaro,P.; Hanistsh,S.; Heinman,ML.; Birkett,M.; Hanstasio,AM.; Kiess,W.; Rascher,W. (J Clin Endocrinol Metab, 1997)