Influence of Haemophilus influenzae β-lactamase production and/or ftsI gene mutations on in vitro activity of and susceptibility rates to aminopenicillins and second- and third-generation cephalosporins

1. García-de-Lomas, J.
2. Lerma, M.
3. Cebrián, L.
4. Juan-Bañón, J.L.
5. Coronel, P.
6. Giménez, M.J.
7. Aguilar, L.