1. Epidemiology and mechanisms of resistance among respiratory tract pathogens 
Fernando Baquero, John F. Barrett, Patrice Courvalin, Ian Morrissey, Laura Piddock, William J. Novick 
Clinical Microbiology and Infection 
Volume 4, Pages 2S19-2S26 (April 1998)
DOI: /j tb00691.x
Copyright © 1998 European Society of Clinical Infectious Diseases Terms and Conditions

2. Figure 1
Worldwide frequency of isolation of penicillin-resistant pneumococci (MIC >0.12 mg/L: intermediate and high-level penicillin-resistant strains).
Clinical Microbiology and Infection 1998 4, 2S19-2S26DOI: ( /j tb00691.x)
Copyright © 1998 European Society of Clinical Infectious Diseases Terms and Conditions

3. Figure 2
Incidences of β-lactamase-positive H. influenzae strains in Europe.
Clinical Microbiology and Infection 1998 4, 2S19-2S26DOI: ( /j tb00691.x)
Copyright © 1998 European Society of Clinical Infectious Diseases Terms and Conditions