Stimulation of osteoprotegerin ligand and inhibition of osteoprotegerin production by glucocorticoids in human osteoblastic lineage cells: potential paracrine mechanisms of glucocorticoid-induced osteoporosis - Hofbauer, L C; Gori, F; Riggs, B L; Lacey, D L; Dunstan, C R; Spelsberg, T C; Khosla, S (Endocrinology, 1999)