Comparison of two ELISA versions for infliximab serum levels in patients diagnosed with ankylosing spondylitis

1. Hernández-Flórez, D.
2. Valor, L.
3. de la Torre, I.
4. Nieto, J.C.
5. Martínez-Estupiñán, L.
6. González, C.
7. López-Longo, F.J.
8. Monteagudo, I.
9. Garrido, J.
10. Naredo, E.
11. Carreño, L.