Association of 24-hour cortisol production rates, cortisol-binding globulin, and plasma-free cortisol levels with body composition, leptin levels, and aging in adult men and women. - Purnell,JQ.; Brandon,DD.; Isabelle,LM.; Loriaux,DL.; Samuels,MH. (J Clin Endocrinol Metab, 2004)