P. Gastmeier, D. Sohr, C. Geffers, M. Behnke, und H. Rüden. Infection Control and Hospital Epidemiology: The Official Journal of the Society of Hospital Epidemiologists of America, 28 (4):
466--72(April 2007)PMID: 17385154.
J. Top, N. Banga, R. Hayes, R. Willems, M. Bonten, und M. Hayden. Clinical Microbiology and Infection: The Official Publication of the European Society of Clinical Microbiology and Infectious Diseases, 14 (4):
363--369(April 2008)PMID: 18261124.