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Transactions of the Royal Society of Tropical Medicine and Hygiene > 2003 > 97 > 2 > 177-181
Transactions of the Royal Society of Tropical Medicine and Hygiene > 2001 > 95 > 2 > 153-158
Transactions of the Royal Society of Tropical Medicine and Hygiene > 2003 > 97 > 2 > 177-181
Transactions of the Royal Society of Tropical Medicine and Hygiene > 2001 > 95 > 2 > 153-158