Document S1. Figures S1–S7 and Tables S1–S3, S6, S9, and S10 Table S4. Summary Association Results for Imputed Classical Four-Digit HLA Alleles Table S5. Omnibus Test Association Results for Imputed Variable HLA Amino Acid Positions Table S7. Linkage Disequilibrium (r2 Values) between Imputed Classical HLA Alleles Table S8. Linkage Disequilibrium (r2 Values) between Variable HLA-DRβ1 Amino Acid Residues Document S2. Article plus Supplemental Data