Wenzel, R. P., Sahm, D. F., Thornsberry, C., Draghi, D. C., Jones, M. E., & Karlowsky, J. A. (2003). In Vitro Susceptibilities of Gram-Negative Bacteria Isolated from Hospitalized Patients in Four European Countries, Canada, and the United States in 2000-2001 to Expanded-Spectrum Cephalosporins and Comparator Antimicrobials: Implications for Therapy. Antimicrob Agents Chemother.

Wenzel, Richard P., Daniel F. Sahm, Clyde Thornsberry, Deborah C. Draghi, Mark E. Jones, and James A. Karlowsky. "In Vitro Susceptibilities of Gram-Negative Bacteria Isolated From Hospitalized Patients in Four European Countries, Canada, and the United States in 2000-2001 to Expanded-Spectrum Cephalosporins and Comparator Antimicrobials: Implications for Therapy." Antimicrob Agents Chemother 2003.

Wenzel, Richard P., et al. "In Vitro Susceptibilities of Gram-Negative Bacteria Isolated From Hospitalized Patients in Four European Countries, Canada, and the United States in 2000-2001 to Expanded-Spectrum Cephalosporins and Comparator Antimicrobials: Implications for Therapy." Antimicrob Agents Chemother 2003.