Incidence of erythromycin resistance and penicillin resistance in clinical isolates of Streptococcus pneumoniae from a Spanish university hospital

1. Perez-Ramos, S.
2. Jesus De La Calle, I.
3. Rodriguez-Iglesias, M.A.
4. Garcia-Valdivia, M.S.
5. Torreira-Cabrera, B.
6. Zaldivar-Valentin, C.