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.
S. Harbarth. Clinical Microbiology and Infection: The Official Publication of the European Society of Clinical Microbiology and Infectious Diseases, 12 (12):
1154--1162(December 2006)PMID: 17121620.