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Transactions of the Royal Society of Tropical Medicine and Hygiene > 2001 > 95 > 6 > 651-656
Transactions of the Royal Society of Tropical Medicine and Hygiene > 2000 > 94 > 6 > 689-693
Transactions of the Royal Society of Tropical Medicine and Hygiene > 2001 > 95 > 6 > 651-656
Transactions of the Royal Society of Tropical Medicine and Hygiene > 2000 > 94 > 6 > 689-693