M. Bonten, D. Austin, and M. Lipsitch. Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America, 33 (10):
1739--46(November 2001)PMID: 11595995.
E. Bouza, A. Burillo, and P. Muñoz. Clinical Microbiology and Infection: The Official Publication of the European Society of Clinical Microbiology and Infectious Diseases, 8 (5):
265--274(May 2002)PMID: 12047403.
L. Haddow, C. Mulgrew, A. Ansari, J. Miell, G. Jackson, H. Malnick, and G. Rao. Clinical Microbiology and Infection: The Official Publication of the European Society of Clinical Microbiology and Infectious Diseases, 9 (5):
426--30(May 2003)PMID: 12848758.