Age-related decreases in insulin-like growth factor-I and transforming growth factor-β in femoral cortical bone from both men and women: implications for bone loss with aging. - Nicolas,V.; Prewett,A.; Bettica,P.; Mohan,S.; Finkelman,R.D.; Baylink,D.J.; Farley,J.R. (J Clin Endocrinol Metab, 1994)