L. Haddow, C. Mulgrew, A. Ansari, J. Miell, G. Jackson, H. Malnick, und G. Rao. Clinical Microbiology and Infection: The Official Publication of the European Society of Clinical Microbiology and Infectious Diseases, 9 (5):
426--30(Mai 2003)PMID: 12848758.
L. Chui, T. Chiu, J. Kakulphimp, und G. Tyrrell. Clinical Microbiology and Infection: The Official Publication of the European Society of Clinical Microbiology and Infectious Diseases, 14 (5):
473--479(Mai 2008)PMID: 18294244.