during a two-year study , we examined the effect of calcium supplementation on postmenopausal bone loss in 43 women in the early postmenopausal period who were assigned to one of three treatment groups : percutaneous 17 beta-estradiol ( combined with progesterone during the second year ) , oral calcium ( 2000 mg daily ) , and placebo .
C0029458
postmenopausal bone loss
C0014912
17 beta-estradiol