Nicoletti, J., S. Kuster, T. Sulser, and B. Ledergerber. “Risk Factors for Urinary Tract Infections Due to Ciprofloxacin-Resistant Escherichia Coli in a Tertiary Care Urology Department in Switzerland”. Swiss Medical Weekly, vol. 140, no. 2728, July 2010, p. w13059, doi:10.4414/smw.2010.13059.