The reported locations of the Rh31 and Rh41 mutations were switched in Vasiliauskas et al., 2011, Nature 479(7371): 108--112. Please correct them to the following: Rh31 - Amino acid replacement: Y203@. Rh31 - Nucleotide substitution: T727A Rh41 - Amino acid replacement: Q46@. Rh41</up> - Nucleotide substitution: C278T.