Protozoological Abstracts
Vol.33, No.7, July 2009
Nature
Vol.456, No.7248
The New England Journal of Medicine
Vol.360, No.24
Nature Immunology
Vol.10, No.6, June 2009
Epidemiology & Infection
Vol.137, Issue 7, July 2009
Brazilian Journal of Mother and Child Health
Vol.9, No.1, Jan/Mar 2009
MMWR
Vol.58, No.20 May 29 2009
Vol.58, No.ss-4 May 29 2009
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