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Transactions of the Royal Society of Tropical Medicine and Hygiene > 2009 > 103 > 12 > 1204-1210
Journal of Infection > 2007 > 54 > 2 > 111-121
Transactions of the Royal Society of Tropical Medicine and Hygiene > 2009 > 103 > 12 > 1204-1210
Journal of Infection > 2007 > 54 > 2 > 111-121