Nat. Genet. 37, 357–364 (2005).

In the version of Supplementary Table 3 initially published online, the nomenclature of DQB and DPB alleles was partly incorrect. The errors have now been corrected and Supplementary Table 3 has been replaced. Neither the stratified analyses that highlighted the independence of the BTNL2 effect from the two HLA loci (Supplementary Table 3 online) nor any other conclusions of the manuscript were affected by these mistakes.