Lessons from the Women's Health Initiative.
D000368:Aged; D003657:Decision Making; D015914:Estrogen Replacement Therapy / Q000009:adverse effects; D019317:Evidence-Based Medicine; D005260:Female; D006801:Humans; D008875:Middle Aged; D015663:Osteoporosis, Postmenopausal / Q000517:prevention & control*; D014481:United States