Sahm, D. F., Karlowsky, J. A., Kelly, L. J., Critchley, I. A., Jones, M. E., Thornsberry, C., . . . Kahn, J. (2001). Need for Annual Surveillance of Antimicrobial Resistance in Streptococcus pneumoniae in the United States: 2-Year Longitudinal Analysis. American Society for Microbiology.

Sahm, Daniel F., James A. Karlowsky, Laurie J. Kelly, Ian A. Critchley, Mark E. Jones, Clyde Thornsberry, Yolanda Mauriz, und James Kahn. Need for Annual Surveillance of Antimicrobial Resistance in Streptococcus Pneumoniae in the United States: 2-Year Longitudinal Analysis. American Society for Microbiology, 2001.

Sahm, Daniel F., et al. Need for Annual Surveillance of Antimicrobial Resistance in Streptococcus Pneumoniae in the United States: 2-Year Longitudinal Analysis. American Society for Microbiology, 2001.