In the article referenced above [Sharan S, Iwuchukwu OF, Canney DJ, Zimmerman CL, and Nagar S (2012) Drug Metab Dispos 40:1993–2001; doi:10.1124/dmd.112.046417], errors were introduced to equations (1)–(3) after the authors corrected the page proofs. “RES” instead of “R3S” or “R3G” was used as a superscript in four places. The corrected equations are: The PDF and XML versions of this article have been corrected.

The compositor apologizes for any confusion and inconvenience caused by these errors.

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