In the article by Rosano et al that appeared in a previous issue of the journal (Circulation. 1999;99:1666–1670), the units of measurement reported for testosterone levels were incorrect. These units should be ng/mL, not mg/dL. This requires changes in the text, Table 3⇓, and Figure 2⇓.
Under Methods: Testosterone Analysis, the last sentence should read: “The lower limit of normal testosterone levels in men by this method is 9 ng/mL.”
The seventh sentence of the second paragraph of Results should read: “Plasma testosterone levels increased significantly (by 2 orders of magnitude) after intravenous testosterone administration (Table 3⇓), and no difference in the hormonal plasma levels was observed between samples obtained before and after exercise (527±342 versus 518±337 ng/mL, P=NS).”
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