Resistance of Streptococcus pneumoniae to penicillin, erythromycin and third-generation cephalosporins in Seville, Southern Spain.
Martínez-Martínez
Luis
L
Department of Microbiology, School of Medicine, Apdo 914, 41080-Seville, Spain.
López-Hernández
Inmaculada
I
Pascual
Alvaro
A
Suárez
Ana Isabel
AI
Perea
Evelio J.
EJ