K. McGinigle, M. Gourlay, und I. Buchanan. Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America, 46 (11):
1717--25(Juni 2008)PMID: 18494098.
R. Wenzel, G. Bearman, und M. Edmond. Infection Control and Hospital Epidemiology: The Official Journal of the Society of Hospital Epidemiologists of America, 29 (11):
1012--1018(November 2008)PMID: 18937571.