I. A. Suliman, A. M. Elhassan, A. Adem, N. K. El-Bakri, and J. U. Lindgren, “Changes in tissue levels of growth hormone, insulin-like growth factor-I, and somatostatin in the femurs of hind-limb immobilized rats”, ActaO, vol. 72, no. 2, pp. 186–191, Jan. 2001.