The C677T polymorphism in the MTHFR gene is associated with the toxicity of methotrexate in a Spanish rheumatoid arthritis population

1. Cáliz, R.
2. Del Amo, J.
3. Balsa, A.
4. Blanco, F.
5. Silva, L.
6. Sanmarti, R.
7. Martnez, F.G.
8. Collado, M.D.
9. Del Carmen Ramirez, M.
10. Tejedor, D.
11. Artieda, M.
12. Pascual-Salcedo, D.
13. Oreiro, N.
14. Andreu, J.L.
15. Graell, E.
16. Simon, L.
17. Martínez, A.
18. Mulero, J.