Calcium intake and bone loss.
D000328:Adult; D000368:Aged; D002136:Calcium, Dietary / Q000008:administration & dosage*; D004958:Estradiol / Q000008:administration & dosage; D005260:Female; D006801:Humans; D008875:Middle Aged; D010024:Osteoporosis / Q000517:prevention & control*
D002136:Calcium, Dietary; D004958:Estradiol