P. Wals, G. Deceuninck, {. Boucher, and M. Ouakki. Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America, 46 (8):
e75--77(April 2008)PMID: 18444843.
WHO. Relevé Épidémiologique Hebdomadaire / Section D'hygiène Du Secrétariat De La Société Des Nations = Weekly Epidemiological Record / Health Section of the Secretariat of the League of Nations, 82 (10):
79--87(March 2007)PMID: 17348094.
B. Orden, R. Martínez, R. Millán, M. Belloso, and N. Pérez. Clinical Microbiology and Infection: The Official Publication of the European Society of Clinical Microbiology and Infectious Diseases, 9 (12):
1245--1247(December 2003)PMID: 14686993.
O. Bilukha, and N. Rosenstein. MMWR. Recommendations and Reports: Morbidity and Mortality Weekly Report. Recommendations and Reports / Centers for Disease Control, 54 (RR-7):
1--21(May 2005)PMID: 15917737.
WHO. Relevé Épidémiologique Hebdomadaire / Section D'hygiène Du Secrétariat De La Société Des Nations = Weekly Epidemiological Record / Health Section of the Secretariat of the League of Nations, 83 (10):
90--91(March 2008)PMID: 18326110.
P. Krízová, J. Kalmusová, and M. Musílek. Epidemiologie, Mikrobiologie, Imunologie: Casopis Spolecnosti Pro Epidemiologii a Mikrobiologii Ceské Lékarské Spolecnosti J.E. Purkyne, 55 (4):
140--150(November 2006)PMID: 17354589.
J. Winstead, D. McKinsey, S. Tasker, M. Groote, and L. Baddour. Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America, 30 (1):
87--94(January 2000)PMID: 10619738.
F. Fusco, and V. Puro. Euro Surveillance: Bulletin Européen Sur Les Maladies Transmissibles = European Communicable Disease Bulletin, (March 2008)PMID: 18445438.