Osteoporosis prevention, diagnosis and therapy. NIH consensus statement 2000, 17:9

Grady D, Rubin S, Petitti D, et al. Hormone therapy to prevent disease and prolong life in postmenopausal women. Ann Intern Med 1992; 117:1016-37.

Reginster JY. The high prevalence of inadequate serum vitamin D levels and implications for bone health. Curr Med Res Opin 2005, 21(4):579-86.