Faecal examinations for helminth eggs were performed on 1869 people from two riverside localities, Vientiane Municipality and Saravane Province, along the Mekong River, Laos. To obtain adult flukes, 42 people positive for small trematode eggs (Opisthorchis viverrini, heterophyid, or lecithodendriid eggs) were treated with a 20-30 mg kg 21 single dose of praziquantel and purged. Diarrhoeic stools were then collected from 36 people (18 in each area) and searched for helminth parasites using stereomicroscopes.

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Inhibitory effects of bupivacaine and ropivacaine on hippocampal field potential amplitude and recovery rate after washout after bupivacaine or ropivacaine treatment represent the underlying mechanisms of the systemic toxicity of local anaesthetics.

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