C. Geffers, D. Sohr, and P. Gastmeier. Infection Control and Hospital Epidemiology: The Official Journal of the Society of Hospital Epidemiologists of America, 29 (12):
1167--1170(December 2008)PMID: 19014317.
K. McGinigle, M. Gourlay, and I. Buchanan. Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America, 46 (11):
1717--25(June 2008)PMID: 18494098.