In the above article [Achour B, Barber J, and Rostami-Hodjegan A (2011) Drug Metab Dispos 39:2130–2134], the technique identified in the title as mass spectroscopy is incorrect; the technique used was mass spectrometry. The correct title is “Cytochrome P450 Pig Liver Pie: Determination of Individual Cytochrome P450 Isoform Contents in Microsomes from Two Pig Livers Using Liquid Chromatography in Conjunction with Mass Spectrometry.”

The authors regret this error and apologize for any confusion or inconvenience it may have caused.

The online versions have been corrected in departure from print.

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