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On page 761 in the 26 July 2012 issue, the last name of the ninth author is misspelled as “Rege Cambrin.” The correct name is Giovanna Rege-Cambrin. In the Authorship Contribution on page 766, the initials “G.R.C.” should have read, “G.R.-C.” Accordingly, the fourth clause of the Contribution should have read, “F.C., G.G., G. Specchia, G.R.-C., E.A., A.Z., M.A.C., and F. Palandri enrolled the study patients and collected clinical data;…” The errors have been corrected in the online version, which now differs from the print version.