Wordsworth, B. P., Lanchbury, J. S., Sakkas, L. I., Welsh, K. I., Panayi, G. S., & Bell, J. I. (1989). HLA-DR4 subtype frequencies in rheumatoid arthritis indicate that DRB1 is the major susceptibility locus within the HLA class II region.

Wordsworth, B P., J S. Lanchbury, L I. Sakkas, K I. Welsh, G S. Panayi, und J I. Bell. HLA-DR4 Subtype Frequencies in Rheumatoid Arthritis Indicate That DRB1 Is the Major Susceptibility Locus Within the HLA Class II Region. 1989.

Wordsworth, B P., et al. HLA-DR4 Subtype Frequencies in Rheumatoid Arthritis Indicate That DRB1 Is the Major Susceptibility Locus Within the HLA Class II Region. 1989.