High variability of HLA-B27 alleles in ankylosing spondylitis and related spondyloarthropathies in the population of Northern Spain

1. Gonzalez, S.
2. Garcia-Fernandez, S.
3. Martinez-Borra, J.
4. Blanco-Gelaz, M.A.
5. Rodrigo, L.
6. Sanchez Del Río, J.
7. López-Vazquez, A.
8. Torre-Alonso, J.C.
9. López-Larrea, C.