HLA-DR2 gene and Spanish patients with ulcerative colitis

1. Fernández Arquera, M.
2. López Nava, G.
3. De la Concha, E.G.
4. Figueredo, M.A.
5. Santa Cruz, S.
6. Dumitru, C.G.
7. Diaz Rubio, M.
8. García Paredes, J.