J. Winstead, D. McKinsey, S. Tasker, M. Groote, und L. Baddour. Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America, 30 (1):
87--94(Januar 2000)PMID: 10619738.
A. Wilder-Smith, K. Goh, T. Barkham, und N. Paton. Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America, 36 (6):
679--83(März 2003)PMID: 12627350.
D. Whiley, P. Buda, J. Bayliss, L. Cover, J. Bates, und T. Sloots. European Journal of Clinical Microbiology & Infectious Diseases: Official Publication of the European Society of Clinical Microbiology, 23 (9):
705--710(September 2004)PMID: 15248092.