R. Wenzel, G. Bearman, and 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.
C. Herr, T. Heckrodt, F. Hofmann, R. Schnettler, and T. Eikmann. Infection Control and Hospital Epidemiology: The Official Journal of the Society of Hospital Epidemiologists of America, 24 (9):
673--678(September 2003)PMID: 14510250.