In the article by Calcagno, et al., appearing in the Journal of Acquired Immune Deficiency Syndromes, Vol. 52, No. 3, pp. 431-432, entitled “Tenofovir Coadministration Is Not Associated With Lower Unboosted Atazanavir Plasma Exposure in the Clinical Setting,” Giovanni Di Perri should be listed as the senior author.

This error has been noted in the online version of the article available at www.jaids.com.

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