... USA) and the help of technical and clinical collaborators from the rheumatoid arthritis international working group, for clinical data management and laboratory typings. The authors are indebted ... summary meta -analysis of allele carrier fre-quencies according to HLA-DRB1 allele classification, in selected samples among the data available from the 13th International Histocompatibility Working ... pen-etrance of HLA shared-epitope genotypes for rheumatoid arthritis. Am J Hum Genet 1996, 58:371-383.23. Kochi Y, Yamada R, Kobayashi K, Takahashi A, Suzuki A, Sekine A, Mabuchi A, Akiyama F, Tsunoda...