present characteristics of symptomatic entamoeba histolytica infection in the big cities of japan.medical records, for 2000 and 2001, of symptomatic amoebic patients who were treated at our hospitals in tokyo, yokohama and osaka were studied retrospectively for the purpose of gathering epidemiological data on symptomatic entamoeba histolytica infection. a total of 58 patients were treated. fifty-five of them were male, and 96% of the male patients were japanese. the mean age of patients was 44.9 years old, and 91% of patients contracted the disease in japan. fifty-six per cent of the male pa ...200414979590
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