N. Woodford, и M. Ellington. Clinical Microbiology and Infection: The Official Publication of the European Society of Clinical Microbiology and Infectious Diseases, 13 (1):
5--18(января 2007)PMID: 17184282.
R. Ingram, B. Cornere, и R. Ellis-Pegler. Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America, 15 (2):
321--324(августа 1992)PMID: 1520766.
M. Bonten, D. Austin, и M. Lipsitch. Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America, 33 (10):
1739--46(ноября 2001)PMID: 11595995.