Phillips RBC, Sackett D, Badenoch D, et al. Levels of evidence and grades of recommendation [Centre for Evidence-Based Medicine], 2001. Available at: http://www.cebm.net/levels_of_evidence.asp. Accessed September 7, 2005.
Randomized trial of estrogen plus progestin for secondary prevention of coronary heart disease in postmenopausal women
Heart and Estrogen/Progestin Replacement Study (HERS) Research Group
Hulley S, Grady D, Bush T, et al. Randomized trial of estrogen plus progestin for secondary prevention of coronary heart disease in postmenopausal women. Heart and Estrogen/Progestin Replacement Study (HERS) Research Group. JAMA 1998;280:605-13.
Risks and benefits of estrogen plus progestin in healthy postmenopausal women: Principal results from the Women's Health Initiative randomized controlled trial
Rossouw JE, Anderson GL, Prentice RL, et al. Risks and benefits of estrogen plus progestin in healthy postmenopausal women: Principal results From the Women's Health Initiative randomized controlled trial. JAMA 2002;288:321-33.
Estrogen plus progestin and the incidence of dementia and mild cognitive impairment in postmenopausal women: The Women's Health Initiative Memory Study: A randomized controlled trial
Shumaker SA, Legault C, Rapp SR, et al. Estrogen plus progestin and the incidence of dementia and mild cognitive impairment in postmenopausal women: The Women's Health Initiative Memory Study: A randomized controlled trial. JAMA 2003;289:2651-62.
Calcitonin for treating acute pain of osteoporotic vertebral compression fractures: A systematic review of randomized, controlled trials
Knopp JA, Diner BM, Blitz M, et al. Calcitonin for treating acute pain of osteoporotic vertebral compression fractures: A systematic review of randomized, controlled trials. Osteoporos Int 2005;16:1281-90.
Awareness of osteoporosis and compliance with management guidelines in patients with newly diagnosed low-impact fractures
Castel H, Bonneh DY, Sherf M, et al. Awareness of osteoporosis and compliance with management guidelines in patients with newly diagnosed low-impact fractures. Osteoporos Int 2001;12:559-64.