M. Dworkin, L. Park, and S. Borchardt. Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America, 44 (6):
810--6(March 2007)PMID: 17304452.
P. Gastmeier, D. Sohr, C. Geffers, M. Behnke, and 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.
A. Wilder-Smith, K. Goh, T. Barkham, and N. Paton. Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America, 36 (6):
679--83(March 2003)PMID: 12627350.