Longitudinal Effects of Aging on Serum Total and Free Testosterone Levels in Healthy Men

Journal of Clinical Endocrinology and Metabolism - Tập 86 Số 2 - Trang 724-731 - 2001
S. Mitchell Harman1, E. Jeffrey Metter1, Jordan D. Tobin1, Jay D. Pearson1, Marc R. Blackman2
1The Intramural Research Program, National Institute on Aging, National Institutes of Health (S.M.H., E.J.M., J.D.T., J.P.), Baltimore, Maryland 21224
2Department of Medicine (M.R.B.), The Johns Hopkins University School of Medicine, Baltimore, Maryland 21224

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